Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb00370877247b7…

MALICIOUS

PDF

52.1 KB Created: 2020-08-02 18:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4476f0d9e51b1c9cdbcc3a347620fdc4 SHA-1: 54767fd677e2f59a87c247ff1185a540d2f70e11 SHA-256: 8cb00370877247b716adcabebdd0e10aa0dbdecfc2d4716323cab333648da382
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that leads to this redirector. This suggests the primary goal is to redirect the user to malicious content, likely for phishing or malware distribution.

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=advanced+combat+tracker+plugins In PDF document text
    • http://files.unscriptedfest.com/uploads/1/3/1/6/131606454/tuxetalajil.pdfIn PDF document text
    • http://files.sallysweetland.com/uploads/1/3/1/4/131438249/e377953a8cde1ef.pdfIn PDF document text
    • http://files.stmaryscomberton.org/uploads/1/3/0/8/130813466/junuzujijaxi.pdfIn PDF document text
    • http://files.chellesparklycorner.com/uploads/1/3/1/4/131407493/womato.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/82466210688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/bisuginesifapizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/xotuxikurujinojobulakaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/13213945096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4744/files/romakibojorebegexetimelus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/zodobabofakupid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/gaketuxetiwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/wukogigikoruzab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/mowofawalejupezagorus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/viktor_build_s7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/74304371460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/21548550085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1751/9772/files/60800995335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/4627966926.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000875e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 5648 bytes
SHA-256: a72cb2b5836490ef6451a0e1020f527e7278a498ff01ecb8d7dfb205a32007c5
font_01_sfnt_off00009a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7A 12752 bytes
SHA-256: 43f03b119242ef2921d089fb03f620e8e65b76f462bb6c01d98babb15c5b9a9b

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