Malicious PDF — malware analysis report

Static analysis result for SHA-256 e167584133c5547b…

MALICIOUS

PDF

38.5 KB Created: 2020-04-07 07:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-07
MD5: 1a4f44305f3af9eee28efcf129d75076 SHA-1: f4d8ee61e592280e129bc11f76c265dee130103c SHA-256: e167584133c5547bc1231a5ef9befb66834fd59bceccaac1e07f2b5aa19674b7
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a large number of external links, many pointing to other PDF files, indicating a link farm or SEO spam tactic. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests that the document may contain instructions for executing commands, potentially via tools like PowerShell or mshta, to facilitate the redirection to these external sites. The primary goal appears to be driving traffic to a network of websites, likely for malicious purposes such as phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 http://tarasnaumenko.com/uploads/1/3/0/8/130813516/130813516.html#palabras+con+gue+gui+para+segundo+de+primaria PDF link annotation
    • http://gerryread.com/uploads/1/3/0/3/130323937/4213881.pdfIn PDF document text
    • http://oakhillcontractorsllc.net/uploads/1/3/0/9/130968960/f8460be0a.pdfIn PDF document text
    • http://enem2022.com/uploads/1/3/1/1/131163684/426a093ca874dc4.pdfIn PDF document text
    • http://russellpatton.com/uploads/1/3/0/7/130739182/xinojekoxemavi_fafudulo_buruponux.pdfIn PDF document text
    • http://laplazita.org/uploads/1/3/0/6/130604256/toxosub-bimosawuzulafi-jusagovamukelet.pdfIn PDF document text
    • http://mbroofing-llc.com/uploads/1/3/0/2/130289341/wokufeviwawebivon.pdfIn PDF document text
    • http://blisspractice.org/uploads/1/3/0/5/130588287/puduvovidenapuwute.pdfIn PDF document text
    • http://musepop.us/uploads/1/3/0/7/130776575/buxepos.pdfIn PDF document text
    • http://derlungenarzt.com/uploads/1/3/0/6/130605237/e717c1fa.pdfIn PDF document text
    • http://smalltowncleaning.net/uploads/1/3/1/4/131437733/wudes-verefarozaxono.pdfIn PDF document text
    • http://kyles-kitchen.com/uploads/1/3/0/5/130551433/8161297.pdfIn PDF document text
    • http://spccmd.com/uploads/1/3/0/8/130813108/boxulipaditozo.pdfIn PDF document text
    • http://prestigeclothing.shop/uploads/1/3/1/3/131379776/6618502.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6943 9544 bytes
SHA-256: db3408d78312e77e9f1caecc0dd2ef23df0563369cd22bbe7f46490e4176dfa9

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