Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed96f060321952b…

MALICIOUS

PDF

39.0 KB Created: 2020-04-03 12:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 869e3d2a03ce2a995298172efc8a42cb SHA-1: 6f49cea9617b5b060d8fe0261495f5687738b34a SHA-256: fed96f060321952b5c9915ee276622e82f1a8fd9c12ddb0b70830f1735accf80
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, contains text related to 'Actividades para niños de preescolar sobre la convivencia escolar', which is likely a lure to attract unsuspecting users. The primary attack pattern involves redirecting users to a network of external URLs, potentially to distribute malware or engage in phishing.

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://iamrushing.com/uploads/1/3/1/4/131453782/131453782.html#actividades+para+ni%C3%B1os+de+preescolar+sobre+la+convivencia+escolar PDF link annotation
    • http://nizkedane.com/uploads/1/3/1/3/131383514/6165592.pdfIn PDF document text
    • http://cbdcreamonline.com/uploads/1/3/0/7/130738821/kusinelugajufe-povasemixazawab-dogebijunoz.pdfIn PDF document text
    • http://suleprikitiwae.com/uploads/1/3/0/6/130621015/nojavevexado-vokowunoxawok-wedavag.pdfIn PDF document text
    • http://madisondigital.net/uploads/1/3/0/7/130776458/6946015.pdfIn PDF document text
    • http://nano-technique.com/uploads/1/3/0/7/130739433/dozaxapekufiw.pdfIn PDF document text
    • http://thenightguru.com/uploads/1/3/0/7/130739274/7571980.pdfIn PDF document text
    • http://jaxaluminum.com/uploads/1/3/0/5/130590076/xogigidiruzuvi.pdfIn PDF document text
    • http://mikealfieri.net/uploads/1/3/0/7/130740077/rugikinaj.pdfIn PDF document text
    • http://athensenergy.net/uploads/1/3/0/6/130620758/2521322.pdfIn PDF document text
    • http://www.leahchang.ca/uploads/1/3/1/4/131438067/4448340.pdfIn PDF document text
    • http://mobilemaki.com/uploads/1/3/0/6/130620549/dagewixifewitilevut.pdfIn PDF document text
    • http://foodcourtrestaurant.com/uploads/1/3/0/6/130604011/sijux-nimod.pdfIn PDF document text
    • http://carenciayoga.com/uploads/1/3/0/3/130313445/3151999.pdfIn PDF document text
    • http://mwvhc-nh.org/uploads/1/3/0/5/130542907/rononoju-bixepiz-viriguwi.pdfIn PDF document text
    • http://accountingservices1.com/uploads/1/3/0/7/130776279/xaruxuvabomitor_soxatirugobevi_degitarevug_wudiwabitonuli.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: thenightguru.com 4 samples

Related samples 2

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_off00006bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB0 8788 bytes
SHA-256: d073dfdda45cb057f2785575d1b418ebe4a8748e2526fee82ad2ab6c294afb22

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