Malicious PDF — malware analysis report

Static analysis result for SHA-256 e28b8b5729b327a2…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 03:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0fafe7638c31421e7283aa445a786f4a SHA-1: 8f3afdf36eef4be1bd8b233ebc97f14f1544927a SHA-256: e28b8b5729b327a2d06c4e202c52f8afca33a40ebecdded098c2437ce1c6c122
194 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the URL and a keyword suggesting a lure related to 'Battlefield 1 planes guide'. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=battlefield+1+planes+guide In PDF document text
    • http://files.impactcommunications.org/uploads/1/3/1/0/131069992/8524117.pdfIn PDF document text
    • http://files.theartgalleryatgcc.com/uploads/1/3/0/7/130738693/3580331.pdfIn PDF document text
    • http://files.gilshrat.info/uploads/1/3/1/8/131857304/misolodijud-wolida-jepivutukowakiv.pdfIn PDF document text
    • http://files.prestonmcclellan.com/uploads/1/3/1/4/131454012/xometipapalu_panaxabafeja_patovoveguk.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/1/0432/2931/5239/files/pusiluwamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/21526238672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/29311285760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/bafadozexagewap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/tedefelisepejiziboda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/rewrite_exercises_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/2768463342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7692/5078/files/9974189967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/59675616032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4429/8133/files/12107891112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/30910304490.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 3

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_off0000659b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659B 5216 bytes
SHA-256: 868d6369754bdcca4982af3eebc868ca65a0e18fcbdeca9232ae0b43d71234ea
font_01_sfnt_off00007771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7771 10636 bytes
SHA-256: d98d6ea8bde9043ecf9c439751a9e2d6119dfd3912074d0b9f456a3fa4413519

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