Malicious PDF — malware analysis report

Static analysis result for SHA-256 919e16aaffa49cfa…

MALICIOUS

PDF

42.6 KB Created: 2020-08-11 06:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5ddf2a2ab7a829bbdaf2f5f8c628c08 SHA-1: b903774a5c532d311105f4c9763734433f37c927 SHA-256: 919e16aaffa49cfa037005dbe7fb0fcc674104e7f469b4d3673a8dccdaffe599
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. This URL is embedded within the document body, disguised as a 'pdf to word arabic converter'. The ML classifier also strongly indicated maliciousness. The presence of a link farm with numerous PDFs hosted on Shopify further suggests an attempt to manipulate search engine results or distribute content broadly, likely as a 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=pdf+to+word+arabic+converter In PDF document text
    • http://files.lorraineparishwriter.com/uploads/1/3/0/8/130873870/lobojixo.pdfIn PDF document text
    • http://liram.acharlotteweddingminister.com/uploads/1/3/1/6/131606027/6443582.pdfIn PDF document text
    • http://nibuw.raycelamb.com/uploads/1/3/2/6/132681464/65c12b64e7add.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/1/0433/1651/0873/files/introduction_to_sociology_101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/gurupuwaxawuserarumuwedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3278/0701/files/69237574495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/53831907098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4388/8023/files/majesty_here_i_am_chords_key_of_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/tegixixuvojaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3613/0983/files/51014167831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0739/3439/files/97217740331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/99586193509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/nicky_case_games.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 8

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_off000069ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AD 5100 bytes
SHA-256: a0016ab2bff59fb9774386cf3bbad4c6a238852e7ffdf0a2b21f249ef2d3788f
font_01_sfnt_off00007b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B25 9932 bytes
SHA-256: 45329eabb7c860c9462d9bca5a8c2e797b5d3cf24d61682ffb9aee955e025aa5

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