Malicious PDF — malware analysis report

Static analysis result for SHA-256 7775ac0a802f99cc…

MALICIOUS

PDF

53.2 KB Created: 2020-08-06 06:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc57271a687d6ddb3c6cec0d8758e340 SHA-1: 84e78010ba6fd9a22792cd70e23f4e06773d1e6f SHA-256: 7775ac0a802f99cc8754f2fa2fc6125c124d394f112dc294c0eafe589a876b32
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious domain. The heuristic firings indicate this is a link farm and a redirector, likely for phishing or malware distribution. The embedded URL 'https://ttraff.ru/pify?keyword=automatic+control+systems+wolovich+pdf' is a key indicator of this malicious redirection.

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.ru/pify?keyword=automatic+control+systems+wolovich+pdf In PDF document text
    • http://files.nenibikinis.com/uploads/1/3/0/8/130814706/zenutimeleposizonusa.pdfIn PDF document text
    • http://files.amishpoly.com/uploads/1/3/2/6/132682093/zolorotomolawo-labikoru-derev.pdfIn PDF document text
    • http://files.healingwiththeta.com/uploads/1/3/1/8/131856276/85a6f81319.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/1/0428/9835/8432/files/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3128/8216/files/kebababorulubanipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/dynamic_equilibrium_biology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6264/7189/files/kuxuvipiwemidibovezekab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/armed_conflict_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2471/8746/files/sojonupadin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/waw_zombie_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/51251291699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/filiwivetefizaludato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/zidagarifupumusesijix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/how_to_rearrange_pages_in_foxit.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_off00009132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9132 5636 bytes
SHA-256: 0344c9398b010eae51abb9b3d035891046af06dd50801ffc9b7c1d552dad5fc6
font_01_sfnt_off0000a449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA449 10308 bytes
SHA-256: 3560ec85edd6f62f4e1a963735eb6a889fb1ee2af772f71cee96b4c04e6f43f9

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