Malicious PDF — malware analysis report

Static analysis result for SHA-256 e43564637b85099b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 05:06:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fce0a2e902b8fce989b3891d5b221cc9 SHA-1: 569c3ea22b967303be01bba5d356a7f53d15ac7f SHA-256: e43564637b85099bb777a1b1806d9f276bdaa2dfd66754b5f8f461a06780c776
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF file contains a large number of embedded links, constituting a link farm. One of the primary links directs to a malicious redirector, ttraff.ru, which is disguised as a search result for 'Telugu dj audio songs mp4'. This suggests a phishing or scam attempt leveraging SEO tactics to lure victims. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector confirms the intent to lead users to harmful content.

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=telugu+dj+audio+songs++mp4 In PDF document text
    • http://files.mahimashahverma.com/uploads/1/3/1/4/131437172/33dd31756.pdfIn PDF document text
    • http://files.matandnick.com/uploads/1/3/1/4/131438758/kejepipeneza-dadulosom-xowomuloze.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/1/0431/7465/8216/files/51584560463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3884/9696/files/verededebilulawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/nofagubuloxipoxejabipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/google_calendar_windows_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1517/1236/files/abrsm_grade_3_piano_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/13686229643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/55113667838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/56595870663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/94162549896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2593/files/55062249004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/intercompany_accounting_sap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/dawoleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/22281452897.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 7

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_off0000656b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656B 5296 bytes
SHA-256: f9daf892dd33c0cfaffb6ffc706bbb44dadccafdcda44a497c7712a2486f55d6
font_01_sfnt_off00007766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7766 10488 bytes
SHA-256: b9c60b475a103275d501fca51ab8dff3cb61d824bae44ccddb938c038f0ff111

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