PDF malware analysis — malicious · b00713ca1f6fb931

MALICIOUS

PDF

74.2 KB Created: 2021-01-14 03:25:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 55f243f0fc1a6ebd91b2aa31743e7da2 SHA-1: 71ac0c2fbb15830622c64bfdf7aa3f639a77ad09 SHA-256: b00713ca1f6fb93194ddcc2d9c55dd846d9883a557d9d7542875c4c29c945f9f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a significant number of external links, with one heuristic specifically identifying a 'PDF link farm'. The presence of a URL pointing to 'traffking.ru' and a large number of embedded links suggests a malicious intent, potentially for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate a likely attempt to exploit users through deceptive content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://traffking.ru/123?utm_term=how+to+remove+curses+in+minecraft+pe
- https://cdn.sqhk.co/ruxuvedije/giLhjXx/43555124044.pdf
- https://tomutoremaduv.weebly.com/uploads/1/3/1/3/131398477/d0a3d79e8716d8.pdf
- https://cdn.sqhk.co/dedikunakudu/hdoKghr/femolagimikifum.pdf
- https://site-1178121.mozfiles.com/files/1178121/nefasivarilide.pdf
- https://jinoranimewaxop.weebly.com/uploads/1/3/4/5/134528513/7195187.pdf
- https://cdn.sqhk.co/guwuweri/adHhhic/gupivamerogememirebawok.pdf
- https://cdn.sqhk.co/bepemuno/hdVihbu/61013760575.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/jemazejodep/18030963603.pdf
- https://s3.amazonaws.com/xonobijikivo/tamil_love_whatsapp_status_video_mp4.pdf
- https://s3.amazonaws.com/wanalovum/gender_pay_gap_reporting_date_2018.pdf
- https://s3.amazonaws.com/jeromopelurab/carplay_usb_dongle_android_tablet.pdf
- https://s3.amazonaws.com/webipejonavuv/middle_school_story_problems.pdf
- https://s3.amazonaws.com/bifadiwuwileji/bendable_concrete_mix_design.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e553.bin` `3c7a42861c670d2aff3a8fd7fb0a7ca7fb72ecc13a79c37ce6da5a9ba7ad1041`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE553	5240 bytes
`font_01_sfnt_off0000f72a.bin` `367eeed7f340259871e852d3fa1367c4e2654e6b93ce331736edc0295747015f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF72A	10792 bytes

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