Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd8108731af5b4c…

MALICIOUS

PDF

38.7 KB Created: 2020-03-20 10:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 8bb381ed9e8b38e5b859d3b9278badd4 SHA-1: b4ecf680cb1df091d28acf5ce0dc6da6a12ce2e2 SHA-256: 1fd8108731af5b4ce3b1be891ef878240ce992dc0c565842fdb3e52b565030b7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files on various domains, indicating a link farm or SEO spam campaign. The document body, though partially corrupted, contains a reference to a book review and the wkhtmltopdf generator, suggesting a deceptive lure. The primary intent appears to be directing users to a network of potentially malicious or spam-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://iavnt.com/uploads/1/3/0/5/130590738/130590738.html#bag+of+bones+stephen+king+book+review PDF link annotation
    • http://misssupremepurityqueen.com/uploads/1/3/0/7/130739503/dutifewini_toxip.pdfIn PDF document text
    • http://webmail.peeldistrictslac.com/uploads/1/3/0/6/130621046/lewiwige_sibexufajufo_vizafabikenud.pdfIn PDF document text
    • http://bailbondsbuffalo.com/uploads/1/3/0/8/130874016/xonugiseru_sukuxijufulele_wowujuzoti_sepet.pdfIn PDF document text
    • http://peaceinside.org/uploads/1/3/0/7/130739377/9896475.pdfIn PDF document text
    • http://resinexchange.com/uploads/1/3/0/4/130483577/likulagijurukur.pdfIn PDF document text
    • http://thegvegascafe.com/uploads/1/3/0/4/130435955/b4ca1a68436fb0.pdfIn PDF document text
    • http://mysospride.ca/uploads/1/3/0/2/130289443/zulamalik_bozepagubuwaji_tokaximeduvem_bogagawas.pdfIn PDF document text
    • http://candlesmedia.com/uploads/1/3/0/4/130475959/484d0e6a4d40ce.pdfIn PDF document text
    • http://bolderlegal.com/uploads/1/3/0/2/130291475/a895aee.pdfIn PDF document text
    • http://byhisstripesiamhealed.com/uploads/1/3/0/6/130604394/butila-rurukaf-bojawure-resuji.pdfIn PDF document text
    • http://pvbcommunications.com/uploads/1/3/0/6/130604765/wizofemebus.pdfIn PDF document text
    • http://www.northernservicesolutions.com/uploads/1/3/1/1/131164079/9323920.pdfIn PDF document text
    • http://karengoedeke.com/uploads/1/3/0/2/130291649/9018820.pdfIn PDF document text
    • http://www.bmx-bundesliga.de/uploads/1/3/1/0/131071047/musobunojonadezakepe.pdfIn PDF document text
    • http://webmail.buynaklaw.com/uploads/1/3/0/3/130313379/53564217d410.pdfIn PDF document text
    • http://www.concordia-archives.net/uploads/1/3/0/2/130274017/8963d9badd.pdfIn PDF document text
    • http://mspaigeclass.com/uploads/1/3/0/4/130489152/nazokifipowik.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
🗂 Part of campaign: androoms.net 8 samples

Related samples 1

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_off0000724c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 6864 bytes
SHA-256: e87dfdddba6be43ae544e3613e16fa5514f0e7ab6dc9ef209ea24963542814fb

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