Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db4acba22cc08c9…

MALICIOUS

PDF

40.3 KB Created: 2020-08-05 17:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27ba7b9a78efc85494097118de91ce2d SHA-1: c67507b5a2fc74faad5ca888524b6742d232ca97 SHA-256: 0db4acba22cc08c9e5fd1c9fd889edf3be38c3250ab05bb9f6eecd79e1c1b127
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that is known to host malicious content. The primary lure appears to be a 'cetogenica dieta pdf' which redirects to `https://ttraff.cc/pify?keyword=cetogenica+dieta+pdf`. This redirector is then likely to lead to a malicious payload or phishing page. 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=cetogenica+dieta+pdf In PDF document text
    • http://files.unitedmarinesystems.com/uploads/1/3/1/4/131407921/1463529.pdfIn PDF document text
    • http://files.ckc3.org/uploads/1/3/1/4/131452977/nisataxo-semulatusijoter.pdfIn PDF document text
    • http://files.kristinbrownelcamino.com/uploads/1/3/1/4/131453605/fitolujevejofe_vifadulinivo_temixawene_morevedise.pdfIn PDF document text
    • http://files.egonbernhard.com/uploads/1/3/0/7/130775228/2242788.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/1/0436/3278/7609/files/94459610100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9963/5355/files/sozubowimizogarumemowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/what_is_the_chilton_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/k_episode_1_english_dub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/openssl_subject_alternative_name.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/tanatituse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/vukidelefuluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/15714154639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/3728157365.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_off00005f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8F 4920 bytes
SHA-256: af752806a39a3937bf7ccdfe3cdddca520248caf5a944bd1e5c202786b47cc86
font_01_sfnt_off0000706a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706A 11208 bytes
SHA-256: ae32453543046cc0773fc963e114f1913d9a35a1ee3deb3a2a9e83d1a42694c9

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