Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f5020ad78c566e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-07 12:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7f922a0b98e2974dad4ef5f80ac9c07 SHA-1: f9277729cd8f38d2dc958a2071dcb11ecd18643f SHA-256: 84f5020ad78c566e330f48a59299a4f334597d41d163cc1b1f8bb8d5a3b2a1be
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=moran+s+i+spatial+autocorrelation+pdf'. This redirector likely leads to a phishing page or malware download. The presence of a link farm and the ML classifier's high confidence score further support malicious intent. The document body itself is heavily obfuscated but contains the malicious URL.

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=moran+s+i+spatial+autocorrelation+pdf In PDF document text
    • http://files.zudane.com/uploads/1/3/0/7/130775131/1ce7e3a06.pdfIn PDF document text
    • http://files.michellexiao.net/uploads/1/3/1/6/131607346/xugex-xotosuzunixovir-kuvareduxifo-fufetatarifu.pdfIn PDF document text
    • http://files.danberkey.net/uploads/1/3/1/4/131483386/6492457.pdfIn PDF document text
    • http://files.jacquelinegreenough.com/uploads/1/3/1/0/131070491/a2068810305.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/1/0431/0692/6741/files/bexoruxeboriwigotifimoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/sportster_rear_shock_length.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/kokufezizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/git_auto_deploy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/vopusag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/83109667404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1813/files/strength_of_materials_all_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5066/3073/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/ipv6_address_generator.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000058f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F0 5156 bytes
SHA-256: f2bad8d34f0949166373ebe701fb7fd0e262efe31eee55be8ff6903d1ec54848
font_01_sfnt_off00006a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A91 10848 bytes
SHA-256: 31a5e0aa3f12e46f627b7e51ad893f020df5964e7fc4d735868d79c80b2172e2
font_02_sfnt_off00008fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEE 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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