PDF malware analysis — malicious · d336590110fdbec6

MALICIOUS

PDF

51.9 KB Created: 2020-10-21 23:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 3dfe0aa1f230f4d495b1b79ca98471c2 SHA-1: 01ef77240f87bc484b6982d122ef2c3a04dafbc1 SHA-256: d336590110fdbec6b156ad971dcdf145d2a6f681314f3f7015e77dd34305e7ba

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a "Fortigate rugged 60d manual". The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://cctraff.ru/123?keyword=fortigate+rugged+60d+manual In PDF document text
- https://cdn-cms.f-static.net/uploads/4369502/normal_5f88213faa871.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369165/normal_5f8b44181e2b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366642/normal_5f8b2ecb2956b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369905/normal_5f8d5afd4ff22.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366321/normal_5f8b26a81a5b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369143/normal_5f87cd8109680.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379606/normal_5f8b744d5338e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378618/normal_5f8ab9315dc90.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/xanebavifamopez/17243915587.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/bolero_piano.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/ebela_bengali_news_paper.pdfIn PDF document text
- https://s3.amazonaws.com/leguvefu/biology_general_knowledge_questions_and_answers_download.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/rocket_propulsion_elements_ninth_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ae1bc732-6b91-40e4-b57f-6ceb54587934/biluva.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6edcf0bb-ec50-46d6-8087-f5b238399c56/49448243093.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5ebaf234-e874-45fe-b62b-c0125df08948/tesubibujiden.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c894b406-c481-47c9-95b5-2276f821ef79/78486861494.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1981c63a-4aa0-40eb-a001-4b07620a22ce/nivufuw.pdfIn PDF document text
- https://s3.amazonaws.com/subud/fuxeferuzasomuguduwe.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/easy_friendship_bracelets_for_beginners.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/13085518047.pdfIn PDF document text
- https://s3.amazonaws.com/memul/canzoniere_saba.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/1457414643.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3122/3208/files/cub_scout_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2812/7650/files/gang_reel_mower_parts.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007043.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7043	5100 bytes
SHA-256: `a0f6e2f19deacfda3384e8e0a3f2bc46a24ca0c28d1e958dceadcb25742d4be5`
`font_01_sfnt_off0000817b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x817B	15884 bytes
SHA-256: `c9847f5a1b901b51c01c772f0b61f78ed63b4edad8e9255cc06e0d9a8b1e8895`
`font_02_sfnt_off0000b2a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB2A8	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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