Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2cb8b7d563ce98…

MALICIOUS

PDF

53.6 KB Created: 2020-08-05 14:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: baae252444b4d1a422a3f9c38c03443c SHA-1: 1cb5a3b17d42568aaa6ae414932c7e2ee61a0507 SHA-256: 7d2cb8b7d563ce9811270eebf4618113aceee255b41d84ae92aeebc386ebdcef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to a redirector service (ttraff.cc) disguised as a download link for a research paper. This pattern is indicative of a phishing or malware distribution campaign, likely using spearphishing attachments as the initial access vector. The ML classifier strongly supports the malicious verdict.

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=b+arch+paper+2020+pdf In PDF document text
    • http://files.mygrmobilervrepair.com/uploads/1/3/2/3/132303378/6724207.pdfIn PDF document text
    • http://files.chulavistachamber.org/uploads/1/3/2/7/132740606/3852d.pdfIn PDF document text
    • http://files.mpbcroanoke.com/uploads/1/3/2/6/132680808/sijolaz_muwekibisi.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/1/0437/1238/1079/files/gilgo_beach_cam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/43644593061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/lejetor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/guru_charitra_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9390/7869/files/2678875421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/foe_reaper_4000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8676/4446/files/wadeganax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/42281485501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5944/4889/files/catalogo_boticario_baixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/bilixafozirisulog.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_off0000887a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887A 5356 bytes
SHA-256: 2e033a54e2b4cb666a1db8a6d668d6915e6b1fbc7b9a0ae2198df78d50b47cf6
font_01_sfnt_off00009ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB2 15196 bytes
SHA-256: a674a47e2d490435ea90dca13ac06c31767cfa0a81eed12f38ce77373d8f669e

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