Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a34b2da0bbabbec…

MALICIOUS

PDF

44.0 KB Created: 2020-08-17 01:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acf22d8a27d707495afc619713fd9a6c SHA-1: 500177b30c5137a88f922d2bc0a6f85022e8fb60 SHA-256: 8a34b2da0bbabbecfb05fc0b3bc8f1ee8fd826ccfa9777f57f67b17b2f025e18
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a PDF link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=choosing+wisely+guidelines+breast+cancer', which is also listed as a malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lead users to harmful content, likely for phishing or malware distribution.

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=choosing+wisely+guidelines+breast+cancer In PDF document text
    • http://files.bettypegues.com/uploads/1/3/1/3/131380305/8808423.pdfIn PDF document text
    • http://files.aplmuseumpasses.com/uploads/1/3/0/9/130969645/bikufikoteniwawa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/82461457846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/27284160731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/sidanajijexatajerolinonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3034/2806/files/cub_scout_wolf_den_leader_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/fiwemumufovapizir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/retotofilawedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6179/5221/files/supolob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/faxiwabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0794/0520/files/13101263355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/laughs_in_british_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5690/6918/files/reformas_borbonicas_en_america_consecuencias_economicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/32213614487.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6135 5440 bytes
SHA-256: 7b33ecaf1464475d45739e0aa6a2cc7ada77497ac27a55339b5d84841a013e51
font_01_sfnt_off000073b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B5 9732 bytes
SHA-256: 014eb3f4d85056e5c2ebfd4c0fcb1d100cdc71cdda6ac12f6201ea1666cb9078
font_02_sfnt_off00009501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9501 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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