Malicious PDF — malware analysis report

Static analysis result for SHA-256 90fd94d3895cc1f0…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 05:12:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7682ec7ac95ab52d3dfece4e3a2d8798 SHA-1: e51c8ea07212e589207290d0bed9801800eb711d SHA-256: 90fd94d3895cc1f011e2a65b6b6f7545ee1a22100a885c76e3b6d87b10889ff4
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised as an answer key for a reading level test. This suggests a social engineering tactic to drive traffic to malicious infrastructure. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and the link farm strongly indicate a malicious intent to redirect users to harmful 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.cc/pify?keyword=measuring+up+reading+level+h+answer+key In PDF document text
    • http://xukip.meadowpta.org/uploads/1/3/1/4/131453323/bonuletopote_gamun_gigebepejid_zeponigadi.pdfIn PDF document text
    • http://taduxi.gumbogiftsandgallery.com/uploads/1/3/1/3/131398102/6095452.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/1/0432/8351/3494/files/xuzinawaxatalunuzej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4547/6757/files/99456834008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0034/0381/files/dokevatusogetix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0730/9986/files/dieta_cetogenica_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/53975865871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3229/6089/files/fajivumanozuzejeletovugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/97586918719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2305/4501/files/biogas_plant_design_calculations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/sheet_music_kevin_leman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7083/2291/files/21171710462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/femixizozajonoxalaf.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 1

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_off00005ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 5544 bytes
SHA-256: 888525987e6027176fcb46d3f66e25bde4309cd8c4e9b9a4d73a855ad1c4dd2f
font_01_sfnt_off0000719b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719B 10596 bytes
SHA-256: 10ad7ba69b588539ab1a23fe5eb83bcfaa1ec4a134c8e548e69ed698c703e0fc

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