Malicious PDF — malware analysis report

Static analysis result for SHA-256 1379a617120ecdb8…

MALICIOUS

PDF

44.9 KB Created: 2020-08-11 23:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79d8103677b221dd2d6e3d1a1306b803 SHA-1: ba8045db6f5d4bf953f2bf63b5b53b4f47a4b1b9 SHA-256: 1379a617120ecdb8344f04bcc22bb21d78b33545f2cc0da75b434d2365d72c3d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though obfuscated, contains text related to 'access control pdf download' and includes the primary malicious URL. This suggests the file is designed to trick users into clicking the link, leading them to a malicious site.

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=access+control+pdf+download In PDF document text
    • http://files.88jamz.com/uploads/1/3/2/6/132696154/cc780a9911.pdfIn PDF document text
    • http://files.meteorcruise.com/uploads/1/3/1/3/131384429/lelisov_wusurovewelan.pdfIn PDF document text
    • http://files.montanafriends.org/uploads/1/3/1/6/131637108/3913827.pdfIn PDF document text
    • http://files.howmayihelponline.com/uploads/1/3/1/8/131856170/9835575.pdfIn PDF document text
    • http://files.forrestcityapartments.com/uploads/1/3/1/4/131453484/9189544.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/1/0431/1570/8580/files/56636024455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/vetugunemizasurefibamaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/nodolupijorakadosirurupup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/blague_de_tonton_liste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/translate_english_to_russian.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/fixududuvasapapevimibuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/rusimilava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8548/6498/files/tipidutikuduve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3321/5644/files/94776047328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0041/9736/files/viluvogisenukoxazer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/kosuvosumazuwutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/crystal_chest_minecraft.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 6

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_off00007030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7030 5228 bytes
SHA-256: 019ac80250aa62242cb032ca375e960ad3ef6a1f543148db94789cb680b20573
font_01_sfnt_off0000820f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820F 10700 bytes
SHA-256: 83cf301c1ba529b57aa3e0f6b96717549f9c9228e9bf64a999acda4f3bfd4e10

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