Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab313e4fda07a6c…

MALICIOUS

PDF

57.7 KB Created: 2020-08-01 20:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29b7216145c8f928940ed9fe14942a26 SHA-1: 68002c2cd09e7375c678ebea712e2a053e052355 SHA-256: 6ab313e4fda07a6c2edd7dbe1b2657bae114281f95e0ce32360eae91e962fb3a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=minecraft+xray+texture+pack In PDF document text
    • http://files.okcastle.com/uploads/1/3/1/4/131409098/fudegerav-dozemadixukovi.pdfIn PDF document text
    • http://files.meredithcarro.com/uploads/1/3/2/7/132712358/jagemuzemusa.pdfIn PDF document text
    • http://files.paperitbeautiful.com/uploads/1/3/0/9/130969985/096008955.pdfIn PDF document text
    • http://files.laserquestbournemouth.co.uk/uploads/1/3/1/8/131857334/lifopurub_latatowisasujat_jobazepipaka.pdfIn PDF document text
    • http://files.realfeelings.net/uploads/1/3/0/8/130873840/kovinidaza.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/1/0437/0087/9510/files/lobafaxodubitero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/pirokoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2254/0185/files/wexewojitepeboforixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/91947770428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/30459025870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/nizum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/tefoxalomidogovirofuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/2922174861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5658/5121/files/savaxanetes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/wawagemitekigetalasilubuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/podifoj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA369 5040 bytes
SHA-256: cb6f2618d44a7808d73cc602d5bcf1d0cd4935175f6f29a1b4e3ce72389dc13a
font_01_sfnt_off0000b4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C0 10860 bytes
SHA-256: 5a6bd0b7b7126aaec1629d33ccc1fc8d3a13364a04823b5585e74daf0c84f9bf