Malicious PDF — malware analysis report

Static analysis result for SHA-256 748fd4640aa6fe73…

MALICIOUS

PDF

63.6 KB Created: 2020-08-06 09:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 996d55cc841882dcb24dc1268cc268fe SHA-1: 01ceb4b8481d473bc3463a4b4e63b6dd93230655 SHA-256: 748fd4640aa6fe73ca774be860ceea1ff899b7e53ad4c00f71d48b0d050d46dc
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically 'https://ttraff.cc/pify?keyword=berlin+conference+1884+pdf', which is flagged as malicious. This indicates a phishing or scam attempt, likely distributing further malicious content. 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=berlin+conference+1884+pdf In PDF document text
    • http://files.sutroelementary.com/uploads/1/3/0/7/130776589/8347842.pdfIn PDF document text
    • http://files.stanleyboxing.com/uploads/1/3/2/6/132695200/8ed68fc.pdfIn PDF document text
    • http://kuwonas.shopkaiapapaya.com/uploads/1/3/1/4/131437402/d06847d5d7.pdfIn PDF document text
    • http://files.layover-tour-beijing.com/uploads/1/3/1/3/131379919/devisodegi.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/1/0440/0034/6270/files/tebekinepurozevekaduxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakuxosisubesabemobaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3621/6229/files/jade_empire_romance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2174/4803/files/kasofoxoxatelafidogodof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2529/9613/files/tosudalenobetew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/63566173553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/84431298987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/kasidasapuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/97850780194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/25482550196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/fekugelivuwuwesoxarafiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/lonumajos.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 5

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_off0000bcd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD0 5144 bytes
SHA-256: 18f2b7837877ececa010610e6cb8b38682d9b47b9061f3d40c341966b05de3d5
font_01_sfnt_off0000ce75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE75 10272 bytes
SHA-256: 55e56376e19378025a7fd01d5305080dfbe913884ac0879f9aa098fd234f3ab9

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