PDF malware analysis — malicious · 1b2bdc346364b2cd

MALICIOUS

PDF

84.6 KB Created: 2021-07-02 21:33:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: de1486820979788a211df0301a1308d9 SHA-1: 46b7c34b84213034c43941b2954407d8502d8451 SHA-256: 1b2bdc346364b2cdc4d1ba1e780190ed48e4748f55926fa2109de4e42cb8e745

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, suggesting it's used to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating a link farm on disposable hosting.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be6c5c93d1d---sinopujawu.pdf In PDF document text
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f60aaf1c74---bisunixu.pdfIn PDF document text
- https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/m3oqdjg2fq5ohvrmm5q2ku4hee/37781103702.pdfIn PDF document text
- https://netiko.ge/img/Data/file/78467855574.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/najejozusadoxoxonenoveze.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/54384880755.pdfIn PDF document text
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/f9f28km3eg2vc1o4lahbht46i1/97021986227.pdfIn PDF document text
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608371bfb20d4---7911945732.pdfIn PDF document text
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/0bceda64c68ebc7947d5511e77feca99/35543825249.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609477f643ac6---masufumadejo.pdfIn PDF document text
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bbbf9722b79---xawesanipaxivak.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7a7107554---povixidirafetajotunimutu.pdfIn PDF document text
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/edcadecc5785dd6750f4d6550d739a37/mezazazigox.pdfIn PDF document text
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7d14b9a7---38369413522.pdfIn PDF document text
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/jbphvdncaihegvirp5r94vs2lq/nesotafefa.pdfIn PDF document text
- https://netwindowvn.com/uploads/userfiles/file/tafosixapadokavebob.pdfIn PDF document text
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ced53d16827---mutotinakulozafol.pdfIn PDF document text
- https://hostsolutions.ro/app/webroot/files/userfiles/files/zujerabagolipu.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc971e5a159---3317724710.pdfIn PDF document text
- http://stalmost.pl/userfiles/file/ranefuvinet.pdfIn PDF document text
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/99566b037999bee8b6d30042dd00e010/punibizewinejixazir.pdfIn PDF document text
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/nu2su8jf71nkkuk6lkbjef02i2/12652718457.pdfIn PDF document text
- http://sunnysidehighschoolclassof59.com/clients/867562/File/wuremigaxala.pdfIn PDF document text
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/a94f4ac2703dd77eb1c573914a471acf/gaterekikegumebivinenalum.pdfIn PDF document text
- https://fallsplat.se/file/1157000163.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=proverb+honesty+is+the+best+policyPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e8aa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8AA	10628 bytes
SHA-256: `0660f94db2a048842a557ae559ae3cec06a78f8fc90aee9da129feb066b9472c`
`font_01_sfnt_off000100bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100BC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000118ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118CE	17628 bytes
SHA-256: `99223e2a7712053644fd3a18edf369fede2f253eaacf809c9194087809b09b80`

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