Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34358f8e2617d05…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 07:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46312cca3dfae06e95cfa98d14c04eba SHA-1: d2c4880c4b4c55b17732948df62845ae0e24d7a4 SHA-256: a34358f8e2617d05e858d3dd4a54db76f3d2da6bb371d2577945ea9743fc4a87
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as information about a Polytechnic form. The document body also contains the URL for the malicious redirector, further indicating a phishing attempt. The presence of numerous other links to Shopify-hosted PDFs suggests a link farm used for SEO poisoning or to obscure the malicious 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=is+auchi+polytechnic+form+out+for+2019 In PDF document text
    • http://jijilofe.asheford.com/uploads/1/3/1/3/131379179/2098618.pdfIn PDF document text
    • http://files.nerdwizardartist.com/uploads/1/3/1/8/131871687/subinuwitunozani.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/1/0431/2373/6725/files/minecraft_iron_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/rope_rescue_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8541/4056/files/by_products_of_sugar_industry_and_their_uses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/83943826558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/84976701596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/52369114387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/49541392853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/dosolefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/weguz.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 6

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_off00005f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 5776 bytes
SHA-256: fcab52d7cbfec6dc280972d0fff45c5e1a9a0eddc582c027dffc500b95a6d25a
font_01_sfnt_off000072e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E2 10280 bytes
SHA-256: c72636bb4d32d9557f79ce590a2c647741a4414b858ad8b0d9e0e91cf6941d4c

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