Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1d32937923749e…

MALICIOUS

PDF

44.8 KB Created: 2020-08-16 12:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e0600ac8e1d294b3a569f3850f86548 SHA-1: b2e8f01aa18d459da68a09c3ce179e29c71e8319 SHA-256: 7c1d32937923749ec7ce98cfc4484186ed16bdaf5370f64b486f464198d3a23f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains text that appears to be a lure for 'guidelines' or 'interpretation' documents. The presence of a malicious redirector link strongly suggests an attempt to lead the user to a malicious website, 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=nice+guidelines+ctg+interpretation+2014 In PDF document text
    • http://files.murraysfoolsdistilling.com/uploads/1/3/1/4/131411596/7626508.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/1/0435/8481/5259/files/urticaria_angioedema_anafilaxia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/89575711069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1290/7423/files/95652578757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/jodunutukawew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3898/files/bioavailability_bioequivalence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/88833941109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/98512673389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/adobe_flash_cs5._5_serial_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/mumaxerajidesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14192803693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3660/files/convert_to_word_ocr_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/bejosetanupir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/pupedojudumezavepo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000636a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636A 5504 bytes
SHA-256: e3112b76d7ad9dd489db6824a9f6a130b629498f2d41d2cef95b5b49aa2a97f5
font_01_sfnt_off0000762c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 10020 bytes
SHA-256: 8ef2c777c9be29255caaad84321b0e24d57de87759176e6f8eea4e55d1b175a2
font_02_sfnt_off0000986a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x986A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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