Malicious PDF — malware analysis report

Static analysis result for SHA-256 a35d3fb31dd4e5f2…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 19:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9b75699a1b50fa0aa7bd1acbd403e0d SHA-1: 036ed63a17a4413240ef32223acfd17d769a4bbd SHA-256: a35d3fb31dd4e5f22e4c0a1d52492dc14a83af6452813b8bc56340c7ba708c2a
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a mass external PDF link farm, with many links pointing to Shopify domains, likely as a way to host malicious content or to appear legitimate. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to click on a malicious link, which is then redirected through ttraff.com to an unknown final destination.

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=sql+server+2020+tutorial+point+pdf In PDF document text
    • http://pinaretaj.mydeckstairity.com/uploads/1/3/0/8/130814328/wituregexiluzom.pdfIn PDF document text
    • http://files.quiltsmiths.com/uploads/1/3/1/4/131438420/8938751.pdfIn PDF document text
    • http://files.giantphotobooth.com/uploads/1/3/1/3/131398221/61f3b606d0ab.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/1/0435/8648/6440/files/namujikewer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9430/1085/files/20253407379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/vedugimeburumumeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/american_airlines_airport_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/north_carolina_new_hire_reporting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/60121788695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1815/6192/files/bloom_s_taxonomy_domains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7402/2550/files/shakespeare_romeo_and_juliet_story_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6654/0711/files/zelibaxurabisuliposawexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/pdf_encyclopedia_of_world_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/53820639768.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 2

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_off00006364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6364 5596 bytes
SHA-256: 06e0f0a2b8d856d56e89d9904db3db96dab0c418ffded272d85b127f0bfcfec9
font_01_sfnt_off00007687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7687 10484 bytes
SHA-256: 7ffc8d511726798a83f31febfb56143effe10a92cc527db130b1bde72acec00e

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