Malicious PDF — malware analysis report

Static analysis result for SHA-256 0981d51a345c8453…

MALICIOUS

PDF

48.5 KB Created: 2020-08-05 16:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4b794fc903f8272e47f6e0fd09ca150 SHA-1: 46185c2d5e30c986660b04459102ae512bbfaab4 SHA-256: 0981d51a345c8453b80da4083d8c181553392889ea17ec7d2d8fc504c5985420
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=alcestis+bangla+pdf'. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content. The ML classifier also strongly indicated maliciousness.

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=alcestis+bangla+pdf In PDF document text
    • http://files.keithouyeknives.com/uploads/1/3/0/9/130969260/dawonowilawubasizofi.pdfIn PDF document text
    • http://files.montreuxatfc.com/uploads/1/3/2/6/132681698/6c94437a6a26afe.pdfIn PDF document text
    • http://files.tonibragg.com/uploads/1/3/1/4/131453485/vixokozurep.pdfIn PDF document text
    • http://files.northstatekleekai.com/uploads/1/3/2/7/132740498/merogef_mitijiraxe_fezav_vaxojebof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/97920541555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/20809439624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/72690823120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/www_puffgames_come.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/13358529398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/dikifowaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/wewevijowusoxeremuzapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/kigejezumoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/bivobefumukatifatepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2785/5522/files/vapafesafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/xusetudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/mamiresogotuzomedodave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/zovozitup.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE6 5036 bytes
SHA-256: 750d6ca8f8fe9a54a28df014f7ccfd2e6cd2fd3429aea12647cf7982cf4bc784
font_01_sfnt_off00008005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8005 11452 bytes
SHA-256: 255d989dbabec616d68757a02688232a73f63e3aea92130415522095a4958004
font_02_sfnt_off0000a6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C6 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c