Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a0df4c28f4114b…

MALICIOUS

PDF

52.3 KB Created: 2020-08-06 08:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5117926e55ed74f8a7164fc81a4bfc4 SHA-1: 94abfb1559027cfc137f86327289dc2f039447e7 SHA-256: 52a0df4c28f4114b16e8e0c77a594a75764d7d2f41996a5c83178f6e17645695
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains text related to 'makalah bronkitis pdf' and the redirector URL itself, suggesting a lure to disguise the malicious intent. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination.

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=makalah+bronkitis+pdf In PDF document text
    • http://files.cottonwoodendo.com/uploads/1/3/2/8/132814276/0264e67c5718.pdfIn PDF document text
    • http://wivizeli.logiekirk.org/uploads/1/3/0/8/130873851/9284977.pdfIn PDF document text
    • http://files.natureswaypetcare.com/uploads/1/3/2/6/132681771/9049901.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/1/0431/3684/3933/files/64142838226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/lazopasazuxavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1185/files/bootstrap_css_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/pajototijexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8541/1990/files/hospital_administration_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/p90x3_workout_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/51745904860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/31709817564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/guts_short_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3759/6575/files/tv_guide_seattle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/81965317758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/majatajafeguzezinavuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/90955527899.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_off00008e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E15 5340 bytes
SHA-256: 13bc64b481a47b0db0933181bd995c9148096085dfb5ce947808472ea4f89450
font_01_sfnt_off0000a039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA039 10332 bytes
SHA-256: 54078c49f9f92f450fffa45e034baff5a9f71ffc34b5c922fc81d1dc2de60b22

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