Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd4c44e0168b1dd…

MALICIOUS

PDF

44.7 KB Created: 2020-08-18 20:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d43f50ca01c8c56ffbd6681c8ca1a619 SHA-1: 97ae86716d5892903ca7addea780105d1fca4b8a SHA-256: fbd4c44e0168b1dd915a34a34a481b2e6d4b38640f7f72a62cf50e166d67544b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=c.+v+format+2019'. Additionally, it exhibits a PDF link farm behavior, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the phishing or malware delivery 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.cc/pify?keyword=c.+v+format+2019 In PDF document text
    • http://files.drconsultinginc.com/uploads/1/3/0/8/130874493/mebijenivo.pdfIn PDF document text
    • http://files.sharronbennettphotography.com/uploads/1/3/0/7/130776433/4243165.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/1/0430/2487/5674/files/vumupakamusafufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/1006797837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/nisijabufozibas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/21004549239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1347/0365/files/blender_shortcuts_2._8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/free_english_comprehension_worksheets_for_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/12581761213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/73916464382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/62240095345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/29816119068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/visigevibimo.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 2

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_off0000728e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 5180 bytes
SHA-256: bc06118c6902d753b2384a0fed56baa6ed9e28dc4d614f76359b3956c32e7ff8
font_01_sfnt_off00008422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8422 9996 bytes
SHA-256: f24fde484d10ba104a96504178f9a9c4f9d5bb05ebb9b7504dd001b8ac269798

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