Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e87144f97cac239…

MALICIOUS

PDF

36.7 KB Created: 2020-08-24 20:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52c84851f8ce0e86f9affad3edb064e0 SHA-1: b192f355fddcada50c87349d387997592fc57228 SHA-256: 4e87144f97cac239dc8ea5f93c9d39ead20853c8e67fb83c9c08b77594cc8e61
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a vehicle manual and the URL itself, suggesting a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF structure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=2013+chevy+malibu+ltz+manual In PDF document text
    • http://fosaz.susanlstraub.com/uploads/1/3/0/7/130739457/334c08d024fafb0.pdfIn PDF document text
    • http://damixov.nadialouderback.com/uploads/1/3/2/7/132741024/1630806.pdfIn PDF document text
    • http://files.onyerbikebookkeeping.com/uploads/1/3/0/7/130739340/60876924b48.pdfIn PDF document text
    • http://files.statsworldcollectibles.com/uploads/1/3/1/4/131453917/gosukenuvov_xorot.pdfIn PDF document text
    • http://siven.dontworryaboutme.com/uploads/1/3/1/3/131378950/magusesewemido-gaxisuravewur-mukonurar-zoxolikuweriwa.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://cdn.shopify.com/s/files/1/0431/8245/7000/files/44435490955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2105/3600/files/ejercicios_de_enlaces_ionicos_y_covalentes_resueltos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/61500947419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/50866924322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/lujigukimavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7968/8341/files/vojegarogifuwifalelegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3350/0565/files/gemorisijefatolafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/texilosazogipugazelipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/64962640372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/36500498036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/butixejozoj.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000458c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x458C 5284 bytes
SHA-256: 52beeb96451769e8979ffef29efa312c9c5a7a4b9d5a9edae5d99df8ab39efc2
font_01_sfnt_off00005766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5766 9492 bytes
SHA-256: 7850eae6766e803b5f31960a731e8c2dfce674ff8813397d646dbf262cd6d790
font_02_sfnt_off000077c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C5 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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