Malicious PDF — malware analysis report

Static analysis result for SHA-256 797f69fb1ee5f853…

MALICIOUS

PDF

42.5 KB Created: 2020-08-15 22:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c71be8a20e2fcdf919bd420a69c6f7cc SHA-1: b5d77e2e0652f6c00799ecec71d09486e67b7a8e SHA-256: 797f69fb1ee5f853a8b6af5e5b29cab183b1dcfd6aba57b31a9c3d2bf24bc74d
162 Risk Score

Malware Insights

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

The PDF contains numerous links designed to redirect users to malicious websites, masquerading as a free software download. The primary redirector URL is identified as malicious, and the document body, though heavily obfuscated, contains similar URLs. The presence of many external links suggests a link farm or SEO poisoning tactic to distribute malware.

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=chess++for+windows+7+free In PDF document text
    • http://vimupixe.elcapoz.com/uploads/1/3/2/7/132712207/dusogobob.pdfIn PDF document text
    • http://files.dryvettefit.com/uploads/1/3/0/8/130814127/rafatenodamoz.pdfIn PDF document text
    • http://files.spokanelifeline.com/uploads/1/3/0/8/130874679/dumosopef-gifelad-xobopadiwom-taxanokorupor.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/1/0431/6109/2245/files/52676755363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7044/5975/files/piruli_augusto_roa_bastos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/sikorajomux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/36557308281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/84857151978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/vobixowalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/81935621095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8984/5667/files/advertising_agencies_structure_and_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/71249732175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pijajaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/xebolodopawimidonoworatax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4105/4105/files/kimarazemavarawirovofan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3780/2146/files/61528004182.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_off00006971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6971 4832 bytes
SHA-256: c9619e9446eee5098907db6a1f03fb538702be6f524af08ec2b90e8ecc90e735
font_01_sfnt_off000079f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F1 10448 bytes
SHA-256: 078d4c494b23f46c51967c6d1e8e668b7473c835ccceecd5c6f38a0c24b26435

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