Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5a12c31e175911…

MALICIOUS

PDF

39.2 KB Created: 2020-08-18 20:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0519bcc0622137212e881cbc2c37deb5 SHA-1: 9d843f607015b223070236acdf75879c8f03bf55 SHA-256: 6a5a12c31e17591101443bf372c7850bc49b17734b1e45e5bc7ca427dbb1f270
162 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.cc/pify?keyword=beautiful+wallpapers++for+desktop. This technique is often used to obscure the final malicious destination and to distribute malware or phish for credentials. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=beautiful+wallpapers++for+desktop In PDF document text
    • http://files.mooreimprints.com/uploads/1/3/0/7/130775025/56bef0.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/1/0434/0544/3233/files/ping_g20_driver_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/474112951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/local_agenda_21_malaysia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9429/8014/files/ridurexosiduwatimasaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/bonfire_of_the_vanities_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/rerejasasipidawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/krav_maga_techniques_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/63203783153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/tadujutabewiwojewanokat.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 2

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_off00005b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B60 5240 bytes
SHA-256: 2d5798e85b5719169ea7948bdeda2cb1c5fd3e0684453413e05dd3ccdd350c35
font_01_sfnt_off00006d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D55 10332 bytes
SHA-256: 3eb43424973889bef4ef193d040a5ea31c842ab3e37eb5b7574470c2fc2e7620

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