Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa1477cc0c6f1fd…

MALICIOUS

PDF

49.9 KB Created: 2020-08-20 19:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7a82c7859979cd6e295cdf8808b4006 SHA-1: 26496f77fac87909e8c7b7e1a58fe0b28f7d1926 SHA-256: dfa1477cc0c6f1fd06712948f4da15cd03786b93d2ea1979b2d5fc38f03e65c8
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 ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL found in the heuristic. This suggests the primary intent is to lure the user to a malicious site.

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=form+bi%25C3%25AAn+b%25E1%25BA%25A3n+b%25C3%25A0n+giao+gi%25E1%25BA%25A5y+t%25E1%25BB%259D In PDF document text
    • http://files.acorstudio.com/uploads/1/3/2/6/132683289/d3948044387.pdfIn PDF document text
    • http://files.libbyyee.com/uploads/1/3/1/3/131398338/lawuvoguwanel_mafezir_lojuzi.pdfIn PDF document text
    • http://files.landlockedthewebseries.com/uploads/1/3/1/3/131379409/8712103.pdfIn PDF document text
    • http://zipolifow.influencersg.com/uploads/1/3/2/8/132815732/3215954.pdfIn PDF document text
    • http://files.theuniversalartistwebsite.com/uploads/1/3/1/4/131437736/b7fb216a65.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/1/0437/7840/8599/files/xukokavanisomoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/latowugejozokitenukopid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2212/2151/files/pamipezukisujij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/ancient_egypt_history_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/97922480692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/mumafofofowar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/porig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/19038382300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/16606062414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0129/3461/files/understanding_by_design_framework.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1251/4204/files/approaches_and_methods.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 7

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_off0000747c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747C 6064 bytes
SHA-256: c9cf6cc873724dff91e66e1c74cc880fce184cb3474637ec308999ee0447d2f1
font_01_sfnt_off000086ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EF 23408 bytes
SHA-256: 707d646875f72318bc250b9550b01800de0b76e63fdeec548deddfaa43c846d7

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