PDF malware analysis — malicious · e64e9a0d67782ddd

MALICIOUS

PDF

78.2 KB Created: 2021-08-30 05:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: 108b73b3d3b576523568b571a846eb0e SHA-1: ebfe8b1cc49dac5982cf42a593380024e9d1d4d9 SHA-256: e64e9a0d67782ddd4153085cb99e52ce16512df49fb7fc3f195ed335a4af37e2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple unknown URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic confirm the nature of the document as a malicious link aggregator.

Machine Learning

Nyx PDF Classifier malicious score 0.6607

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://binarbaid.com/public_html/userfiles/file/talowipovirugezij.pdf In PDF document text
- http://mintaialuminum.com/d/files/ganudakalituruxisej.pdfIn PDF document text
- http://emannsltd.com/userfiles/43702484203.pdfIn PDF document text
- https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/f3b72b70ee83510e25ac3dacedce92e0/66238304630.pdfIn PDF document text
- http://studioarchterreni.it/userfiles/files/jitobudufunotenifobed.pdfIn PDF document text
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e92b5bdd1---nolirumajexezase.pdfIn PDF document text
- http://dunajecbiala.pl/upload/File/22095996911.pdfIn PDF document text
- http://satakantaresort.com/user_img/files/45676986253.pdfIn PDF document text
- http://iglozawiercie.pl/zdjecia/file/lesinubeve.pdfIn PDF document text
- http://cochemical.com/upload/files/98810629828.pdfIn PDF document text
- http://franzoesischebulldoggen.eu/userfiles/file/37150104602.pdfIn PDF document text
- https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/78isf0i7j0i837fo4lb0nnfk8i/duxim.pdfIn PDF document text
- http://vipnovini.bg/root/f/uploads/files/71290849347.pdfIn PDF document text
- http://hurtowniagrafit.pl/userfiles/file/58038779055.pdfIn PDF document text
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5ac1c8721---2874442487.pdfIn PDF document text
- https://papiratisk.cz/soubory/rijuxaresabu.pdfIn PDF document text
- http://canyonoaksmtg.com/~duckdi5/canyonoaksmtg.com/content/file/gekilijivipi.pdfIn PDF document text
- https://dm288.rs/slicice/file/44145905798.pdfIn PDF document text
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610a6c4e4dae3---rajofute.pdfIn PDF document text
- http://pogotowienaukowe.com/Upload/file/16764793705.pdfIn PDF document text
- https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/tusofaraxuku.pdfIn PDF document text
- http://dogable.de/userfiles/file/xetimifukeramokozil.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=application+to+hack+wifi+passwordPDF link annotation
- 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_off0000d69a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD69A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000eeb1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEB1	10744 bytes
SHA-256: `4f368cffd65c82de37e3d8837e6e1f0e1e7986a90600ac89bb728223e10bda72`
`font_02_sfnt_off00010772.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10772	18556 bytes
SHA-256: `b82b0c74e48b80ba6d8314820fb943551709b5f4406a2a705dac61580bc117eb`

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