PDF malware analysis — malicious · f7c3c04f27263d78

MALICIOUS

PDF

82.8 KB Created: 2021-07-09 15:24:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: fda84857badb58a54b0d22000eb20ce5 SHA-1: 22a70c19fe92d4681162bae71676cba9146eef10 SHA-256: f7c3c04f27263d7800abfc84294e2b7d3b44e2474c3a081c5b17c22507b3886e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to numerous domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of a 'utm_term' parameter in one of the URLs indicates a potential phishing or spam campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

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://infrive.ru/uplcv?utm_term=rihanna+before+and+after+nose+job PDF link annotation
- http://888chji.com/userfiles/files/tavoxokixasurakupunam.pdfIn PDF document text
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c867fb77aa9---jupazasetim.pdfIn PDF document text
- https://villadorottya.hu/uploads/frontend/files/lejusajokizorekonebo.pdfIn PDF document text
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160acd982355ac---43840098323.pdfIn PDF document text
- https://lesura.net/userfiles/file/49055071108.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/2e5fdcfa376cb1e5ac7032f83332d7eb/moxamunonedexik.pdfIn PDF document text
- http://mistral-paints.cz/userfiles/files/baxosif.pdfIn PDF document text
- http://guchenes.com/d/files/petov.pdfIn PDF document text
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/dqrdrvbfi9i9ch760cdigc50gc/kedudim.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9a836ee9b---94643095356.pdfIn PDF document text
- http://teplolux72.ru/upload/file/44925371849.pdfIn PDF document text
- http://jtour.vn/userfiles/file/45624970364.pdfIn PDF document text
- http://altelaw.com/uploads/image/file/73301749091.pdfIn PDF document text
- http://yangpupark.com/uploadfile/files/daxezitutexobaboro.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074533809e93---tizejixifemigusajanebeban.pdfIn PDF document text
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eec5c31ffb---kulekomavozifubax.pdfIn PDF document text
- https://pendekaremas.com/contents//files/xeviveg.pdfIn PDF document text
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160793b587185e---97739654652.pdfIn PDF document text
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6173e24b57---1829945401.pdfIn PDF document text
- http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/cca6f19d1a49805f4936482cabfac091/24850574693.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160dd81fb03b97---kojosewegipotomopemis.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/d3a1he12oaj1brmfcf7jallqoa/44954455038.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160791dc4304d7---subeteposiwuxawosili.pdfIn PDF document text
- http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/fefodufarijetezumajikikop.pdfIn PDF document text
- http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/8furrafc74cmh1ok99dbdvefo6/gedupofaluko.pdfIn PDF document text
- https://unitjaya.com/contents//files/mavifetowowosegebulogez.pdfIn PDF document text
- 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_off0000e0af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0AF	10720 bytes
SHA-256: `ed7bdc8c96f7b7606d42150b5170fa497066380bf4fd381ea783f041dd6e6790`
`font_01_sfnt_off0000f931.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF931	17092 bytes
SHA-256: `7c5b4da53daa8b466d2895bfbcfb65a117dced69bb1095925db23b6ee9a8d9a2`
`font_02_sfnt_off000125c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125C9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.