Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbed90f4b4d04f0d…

MALICIOUS

PDF

42.9 KB Created: 2020-07-30 20:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bc2ac4fee1f929df08f83f658d7422b SHA-1: 38ff824d3c29f97fcedabe2bec70454973529610 SHA-256: fbed90f4b4d04f0da8a3455e24d374d7372d65ae914f54a975a7876c555c8c1a
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a free anatomy drawing PDF. The document body is heavily obfuscated, but the presence of the malicious link and the heuristic firings strongly suggest a phishing or malware delivery attempt. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content.

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.com/pify?keyword=easy+anatomy+drawing+pdf In PDF document text
    • http://files.omlalawyers.com/uploads/1/3/0/7/130776120/kekine.pdfIn PDF document text
    • http://files.pacehighchoir.com/uploads/1/3/2/7/132740779/pipopevuromobej_medesuwironaba_jekubus_fezojalavebiser.pdfIn PDF document text
    • http://files.paulmcphater.com/uploads/1/3/1/8/131872087/simopupipufuri-mizub-voges-fijabolanabojo.pdfIn PDF document text
    • http://files.backdoorfriendspurebredcatrescue.org/uploads/1/3/1/4/131436991/zanidiwivonu-sisebijugabe.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/1/0434/2307/2412/files/52451840979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/gadaxivus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4954/8966/files/rejidapetunedum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/52560186368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/lawadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1793/5770/files/90680026070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/88451783770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8959/2473/files/kavowitikotek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1817/3086/files/kufewovovopapuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14490041284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.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_off00006c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C13 5148 bytes
SHA-256: fc8cbf82c4846bf6dfa8fc57fdb09f47a0dcc746cedf1b24708672fc14a38505
font_01_sfnt_off00007d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 9776 bytes
SHA-256: 119eb59c7d9f32589c7b5a04341275ba4d404a0ea2e9a18695e36328c49af37d

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