Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc62b4bba5c7a9aa…

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 22:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2047eb52a6ad35551dddeac28f1ffcb SHA-1: 2d148a69b9c0d865d8d034b269b63f697d7b6b60 SHA-256: dc62b4bba5c7a9aa7ad355fa0231c39ea43a156f5c2a06100a009c8d5cc42c22
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or redirection tactic to obscure the final malicious destination. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the target URL, reinforcing the malicious redirector intent.

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=capacitor+in+series+and+parallel+pdf In PDF document text
    • http://files.impactcdyouth.com/uploads/1/3/2/7/132740462/b8b5e9e49aea.pdfIn PDF document text
    • http://files.peacepcnc.org/uploads/1/3/0/9/130969477/ab0321.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/1/0428/8380/9443/files/90471397378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/xuxowemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/xifafatutiwek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/29710727915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1147/2541/files/17155056898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8106/2805/files/main_function_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8438/2357/files/64400875708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/spread_shotgun_wing_t_offense_playbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7015/9016/files/which_metal_is_the_best_conductor_of_heat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/82777165241.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 5

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_off00005c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E 4960 bytes
SHA-256: 28e0dcd3e89ef3deb435149194d6929ae6716ed43d60a19e99f57a8d4fa37157
font_01_sfnt_off00006cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFD 9720 bytes
SHA-256: afc8fea9917c47aa65970adf1f581ac144c6508e19739b9ee49940f5e70edc5e
font_02_sfnt_off00008e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E38 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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