Malicious PDF — malware analysis report

Static analysis result for SHA-256 86710666bf81a526…

MALICIOUS

PDF

80.8 KB Created: 2021-05-29 05:18:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6cf65a6ad4f608f7a496b4cef71c7f11 SHA-1: e29f1c124fdccdccb564c8d167146596936659cf SHA-256: 86710666bf81a52615942f59b0aea9c163333fbf94c53098ebd08a74af15217d
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The presence of a URL with 'utm_term=fnaf+1+hack+unlimited+power+apk' suggests a lure for potentially malicious content. ClamAV and ML heuristics confirm the malicious nature of the PDF, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jottigo.ru/strik?utm_term=fnaf+1+hack+unlimited+power+apk PDF link annotation
    • https://vixezijimike.weebly.com/uploads/1/3/5/9/135993975/64863de31.pdfIn PDF document text
    • https://bakigimos.weebly.com/uploads/1/3/4/3/134322269/xefajiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484812/normal_6030f652c3e7e.pdfIn PDF document text
    • https://kuxiwapanipajof.weebly.com/uploads/1/3/0/9/130969705/puvizu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_605d03802558e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_6052b75404303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_602b351fd7fa1.pdfIn PDF document text
    • https://molilavavabofu.weebly.com/uploads/1/3/5/9/135989114/nisadakimeba.pdfIn PDF document text
    • https://gesunewa.weebly.com/uploads/1/3/1/4/131438127/valurenapaso.pdfIn PDF document text
    • https://tijezelaxupoki.weebly.com/uploads/1/3/5/3/135340387/4709044.pdfIn PDF document text
    • https://wezawelo.weebly.com/uploads/1/3/0/8/130813956/cff06b.pdfIn PDF document text
    • https://modemogip.weebly.com/uploads/1/3/0/7/130776314/fuwumupurujum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393029/normal_5fc95d351d858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417213/normal_605574620eaa1.pdfIn PDF document text
    • https://ludakugoru.weebly.com/uploads/1/3/4/6/134698973/tunuxemufuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497082/normal_5ff5158f785d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_605d7b6680ae5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5ff363973b55d.pdfIn PDF document text
    • https://bupedokan.weebly.com/uploads/1/3/1/6/131607930/jegaxodupe_tovuguzaditudug.pdfIn PDF document text
    • https://tarivoda.weebly.com/uploads/1/3/4/6/134693378/3699907.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://uploads.strikinglycdn.com/files/7a880820-0f47-43f9-b650-98e24215c6ed/23929714347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af73c9f-c4d7-4866-bdd2-ecc935c3c5d1/58004124004.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2d63db-df0f-4496-9d6f-9430e9197e9f/48218600130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5381344a-2fa9-4769-be1c-8c4a2f8a19e5/notod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb1f1e3-84fe-443f-b79e-a94b2c774a6e/wufotunilovoronanewife.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.

FilenameKindSourceSize
font_00_sfnt_off0000ee2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2E 5260 bytes
SHA-256: 6234ba2a949b424b2a3a282a0e6655fe38856fc41e2b2ce86bd197bc3a3449aa
font_01_sfnt_off0000fff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF7 11016 bytes
SHA-256: 4e0d7d739e091e744c0b5d5cf3b318ede99f70f2b7a3213c1201910cd5522d65
font_02_sfnt_off000125c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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