Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4525c738a02d5bc…

MALICIOUS

PDF

51.9 KB Created: 2020-07-25 16:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77a947aa7c5d43fcb3a7a483c68f5351 SHA-1: 89a3df0fcbc624c1ae1ec65c11aa80cf82f1e7ea SHA-256: d4525c738a02d5bc1bd256af9d71ff4c00cf28e4ed748c4fb031bbbb4949a8b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Android data usage warnings'. The primary malicious URL identified is ttraff.ru, which is likely used to redirect the user to a further malicious destination. The presence of numerous external PDF links also indicates a link farm strategy.

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=avertissement+utilisation+donn%25C3%25A9es+android In PDF document text
    • http://files.heresthedeal.co/uploads/1/3/0/9/130969689/tedavoxavu.pdfIn PDF document text
    • http://files.revelstoketheatrecompany.org/uploads/1/3/1/4/131436956/lofiwetegajo-diner.pdfIn PDF document text
    • http://files.bristol.co.nz/uploads/1/3/1/6/131637546/xezafolipuk.pdfIn PDF document text
    • http://files.ccsb.danafarberdev.org/uploads/1/3/2/3/132303219/4e1c36536d7800.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/1/0427/5847/1846/files/59957705387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/45689897473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2749/5074/files/rutudovitunure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/79106923436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/33181432582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/23176284978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/84082908358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/84517300681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2846/2240/files/2934291961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/99803057264.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7527 5044 bytes
SHA-256: a01592dc0ffbe895a8aed3c392aaadf68af5e71580752b09cb79436dfaaedc90
font_01_sfnt_off000085e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E2 11732 bytes
SHA-256: ce2bdda309539f3d063d349c260ae8bfa43d6979a98744ba300711e435b8ceae
font_02_sfnt_off0000aadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAADC 16140 bytes
SHA-256: 591c796ad5e02d6de9fb83a5f5554ceefd95323591fa56c7602a80824882357f

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