Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6746aaa2cfdf286…

MALICIOUS

PDF

45.4 KB Created: 2020-08-09 05:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8712546a40d81ee43ca5572e3989d06 SHA-1: 13581a7a1f1a4af844ad23acc031350f56f232de SHA-256: a6746aaa2cfdf286257da195ccdde82475cc847c7883036d21b2b7e60844d4d0
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=atonia+uterina+tardia+pdf. Additionally, it features a PDF link farm with 16 external links, many hosted on cdn.shopify.com, suggesting a broad attempt to distribute malicious content or engage in SEO abuse. The document body, though heavily obfuscated, contains references to urgency, aligning with the 'SE_URGENCY_LURE' heuristic.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=atonia+uterina+tardia+pdf In PDF document text
    • http://files.studiorezonans.ca/uploads/1/3/0/8/130814605/3339645.pdfIn PDF document text
    • http://files.asacottrelldar.org/uploads/1/3/1/8/131856042/8980422.pdfIn PDF document text
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdfIn PDF document text
    • http://files.mtacdiamondbar.org/uploads/1/3/0/7/130739789/e71f3.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/1/0440/0332/8150/files/what_does_under_contract_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/82691037240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/1985_honda_shadow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texigusowemojegovivek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0779/3561/files/zokolusamarubunaded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/preparation_of_activated_carbon_from_coconut_shell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/79396315186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/toniwevifaxovuded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/65717118473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/marofurolopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9213/0458/files/26612861691.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 4812 bytes
SHA-256: 4e600ed31184e38205eeb7770ba517c8b0753998f9283e8b6289339b3561e750
font_01_sfnt_off00007fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB9 13256 bytes
SHA-256: a76d33fcccda754e053501cbe7d1e8bbe3383eee31147d73acfc2bcd972e3647