Malicious PDF — malware analysis report

Static analysis result for SHA-256 751f0543ce6a388c…

MALICIOUS

PDF

57.5 KB Created: 2020-08-11 12:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 549a884b36cbc1a7db9ad9de321bdf26 SHA-1: 077758de94842fa9c079e9ce925e7daa8503cf87 SHA-256: 751f0543ce6a388c26ff3382828be4c0a220b3140eab01b376da6b1481063d17
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it's the primary lure. This pattern is consistent with SEO poisoning or link farm tactics to drive traffic to malicious sites, likely for phishing or malware distribution.

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=agni+siragugal+tamil+pdf+file In PDF document text
    • http://files.squaremealroundtable.com/uploads/1/3/0/7/130775380/2d262d.pdfIn PDF document text
    • http://files.jazikatxox.com/uploads/1/3/1/3/131383864/7893133.pdfIn PDF document text
    • http://files.graceumcwautomaarea.org/uploads/1/3/1/0/131070561/rirelosurep.pdfIn PDF document text
    • http://rozig.themainbistro.com/uploads/1/3/1/4/131452903/wugalumabudisowejeg.pdfIn PDF document text
    • http://files.magicfoxproducts.com/uploads/1/3/0/9/130969478/822fd6bc12a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8565/files/30535154741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/39265022617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/45294399546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7983/4531/files/que_es_baumanometro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/jivawuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4343/0305/files/10833329617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/almendras_propiedades_nutricionales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1751/7725/files/lujokek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5185/files/backwards_and_forwards_david_ball_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/43356430350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9846/7480/files/health_career_pathways.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/cultivo_de_cactus_y_suculentas.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000824f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824F 5120 bytes
SHA-256: 533ad16cc64daeffc9ea4a8a3774d46b977b472291f594ae1ff258b1e4542cea
font_01_sfnt_off0000939b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939B 6368 bytes
SHA-256: aa44fbde68c4cdcc790668a6198471610eebfd90688c631a8ac3f5359503f167
font_02_sfnt_off0000a796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA796 10088 bytes
SHA-256: 52645ee3f0e415b7e36942aa7d0f0c7a2efabae69de97340a65a2f5191d07c74
font_03_sfnt_off0000ca04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA04 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e