Malicious PDF — malware analysis report

Static analysis result for SHA-256 87921d92f49f6ef3…

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 02:30:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7a5b189b59bc64438cbff08c38674fc SHA-1: 39d871ac9a9f6a2563277401e295f86346983d9c SHA-256: 87921d92f49f6ef369015ae1627ae8e9739e9bb481f36aa523006e68a3e77ae6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which are likely part of an SEO link farm designed to improve search engine rankings for malicious content. The primary malicious link, 'https://ttraff.ru/pify?keyword=love+death+and+robots+imdb+parents+guide', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting a phishing or scam lure.

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=love+death+and+robots+imdb+parents+guide In PDF document text
    • http://kofeb.embracingyourenergy.com/uploads/1/3/1/3/131378950/xagofenewogar.pdfIn PDF document text
    • http://files.sheknowsadventure.com/uploads/1/3/1/4/131438829/7a177.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/1/0436/7033/9737/files/luvukulizila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1731/4975/files/comilla_board_jsc_result_2018_with_marksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/satya_arkestra_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/30485080601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/astrology_book_in_bengali_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9190/9025/files/daytona_beach_craigslist_org.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/eicr_report_edinburgh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5298/0641/files/nojukokidafusasubajiwefud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/anlodipino_5_mg_bula.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_off0000697d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697D 5484 bytes
SHA-256: b9ac3ab1d716d0b8d0cd624a1281c29329499ddc0379f7bd17fcdcb05469f612
font_01_sfnt_off00007bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF7 10820 bytes
SHA-256: 2247d1979555182d0c410f196c707ea749894efd7f680c80189c16998a4449ba