Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd916515d375bff…

MALICIOUS

PDF

51.6 KB Created: 2020-08-23 16:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d009bb15b0a1190d4bd01c8758f6af6 SHA-1: 2bb543e6bca5282e1f1556b8a469873658c57e3f SHA-256: 1dd916515d375bff653f8168f03506901cb6b2f24a1cd68dc45750d3ee97cfd2
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'change of address form', aligning with the 'SE_PAYMENT_REDIRECT_LURE' heuristic. This suggests the primary goal is to trick the user into clicking the malicious link, which is likely part of a phishing or credential harvesting campaign. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=change+of+address+form+ny+post+office In PDF document text
    • http://files.leveldek.com/uploads/1/3/1/8/131856949/kapodumijopedana.pdfIn PDF document text
    • http://files.stdympnas.com/uploads/1/3/2/3/132302940/345d0.pdfIn PDF document text
    • http://files.thehubofarts.net/uploads/1/3/0/8/130873804/fujadeleta_wemuzudasovusuk_gavedonexab.pdfIn PDF document text
    • http://bodix.fingerhutpastries.com/uploads/1/3/1/0/131071157/xuduxadoxiga.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/1/0429/5871/7087/files/asterix_en_italia_gratis_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3883/3831/files/tajonegakibategopijidige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/14894461700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5778/2694/files/38279249738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/women_s_protection_act_against_domestic_violence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/astroneer_lunar_update.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/11379523806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/viriliralidivakuwepem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/zidewebojopuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7269/8006/files/metro_route_map_delhi_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/paroxysmal_nocturnal_hemoglobinuria_adalah.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 3

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_off00008a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A76 5544 bytes
SHA-256: 599d3a1286434e2e059f2b425135fba9ea94df917441bfdf644503383a6c9718
font_01_sfnt_off00009d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2C 10588 bytes
SHA-256: 12989ab32258347a7de8e679495a9feed284922cfe497a87497599472180a54a

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