Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec34df270a51d996…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 13:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2dd08e0c2096c79760c77def2e9a1230 SHA-1: 0791bc5bda630cd2c3467681f6d7d91aa143ad4c SHA-256: ec34df270a51d996029f8923dd3dcbd9c079570aa61a3a81daf290d883c830cb
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggers the redirect. This suggests a phishing or scam attempt designed to lead the user to malicious content.

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=alphabet+phonics+worksheets+pdf In PDF document text
    • http://files.asnapoftime.com/uploads/1/3/1/8/131856186/dakulutivedusaximo.pdfIn PDF document text
    • http://files.gordon-setter.pl/uploads/1/3/0/7/130776363/mamixukori-wulun.pdfIn PDF document text
    • http://files.northernbugwear.ca/uploads/1/3/1/4/131407165/modofuda-tevuravikat-xejaduve-xewuzedalupus.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/1/0429/3391/1705/files/82684680125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8841/6669/files/how_to_ungroup_in_illustrator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0237/9939/files/48409002150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/56903260726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/lezujidimot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/40028387725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0623/3496/files/catalogo_ascensores_orona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/vibifuvafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/24952254398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/45231257865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/xerimofiduvegafevemikur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1800/9251/files/ridisufixoj.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 8

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_off00006fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 5528 bytes
SHA-256: 94d956cb3b886e601c2f4aa7cc8161a4ff4ff6e798b190866183cd2109e93d29
font_01_sfnt_off00008279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8279 10460 bytes
SHA-256: dd732a07fcda186f22e79e4a1922d29f441f022d728639d43d60cfc50eb76f01

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