Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e01a589a05005c5…

MALICIOUS

PDF

79.2 KB Created: 2021-05-11 21:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 29adaaede781a977949b6faceb148bc4 SHA-1: 16794baa5f79a4539a7f019c7a07da93cd4f9ee2 SHA-256: 8e01a589a05005c52b6090732beeea847b5713dc1a1ff41c04072cf1d2ec79f6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/strik?utm_term=what+lug+pattern+is+a+jeep+cherokee PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460233/normal_602b5c6736907.pdfIn PDF document text
    • https://joposiga.weebly.com/uploads/1/3/5/3/135399072/tulusuvuwetirejom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_6022625772928.pdfIn PDF document text
    • http://suporefebakibur.mygamesonline.org/dinike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471691/normal_60581967df564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469824/normal_603731e4b4d52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500429/normal_600ddeebef682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417214/normal_600e9d9b2cba9.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/63739431910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529095/normal_6050c99d6d9af.pdfIn PDF document text
    • https://latobebesat.weebly.com/uploads/1/3/5/9/135993630/53499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426541/normal_606af5b588573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_60478d0bb488d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_fd575f68588541dc8ccaa4e03fd5f012.pdf?index=trueIn PDF document text
    • https://bbf05351-1c49-455c-8ea8-df349977a4d5.filesusr.com/ugd/15c6d6_082f4fd2b6e6405389ff01ab5f7d4711.pdf?index=trueIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_d7045e1a64634a389e05a12c10afef09.pdf?index=trueIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_0545ff2d20574fefa77bcc2bc0d3a3b7.pdf?index=trueIn PDF document text
    • https://fccd5518-64e1-462d-9dbe-8d8d8a19ca7a.filesusr.com/ugd/eb005d_b38cccac3f854628b15088d2edbc6eb5.pdf?index=trueIn PDF document text
    • https://97a45c9e-1ab5-462a-bfe2-fded34b9a8b9.filesusr.com/ugd/b50c55_5b97490b8c2148bfb936363b46c176f8.pdf?index=trueIn PDF document text
    • https://0879403c-3be5-48e4-925f-21334a7d5cfe.filesusr.com/ugd/407fcc_fd7c942544fd49ca82aa1b3bfb58388d.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF643 5348 bytes
SHA-256: 7a78a80cd29b992a984784006c369beb42fbd761b25953614f15d1a854e4a0d9
font_01_sfnt_off00010887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10887 11368 bytes
SHA-256: 2c06ef0bbb7b053aabd05aba596fec56219530f9dbfe6c2ac06043d36cce460d

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