Malicious PDF — malware analysis report

Static analysis result for SHA-256 a633df85a7662340…

MALICIOUS

PDF

49.2 KB Created: 2020-08-08 12:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 706c48e88ae267a1f27f4929ca066d4d SHA-1: 894de2be6e3d484a734d1ed25e96f0030d5179c8 SHA-256: a633df85a76623405a61e1c4a325d7e1a9e4cf1ca2aa58e429a42146b4504f86
202 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, ttraff.ru, which is flagged as malicious. Additionally, it hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or traffic redirection. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The document body, though heavily obfuscated, contains the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=java+programming+language+pdf+in+urdu+free+download In PDF document text
    • http://files.recreatednow.com/uploads/1/3/2/8/132814933/9359141.pdfIn PDF document text
    • http://pemaz.claystories.com.au/uploads/1/3/1/4/131407406/9550413.pdfIn PDF document text
    • http://files.familypracticecenterofnewtown.com/uploads/1/3/1/4/131438461/nezaxibiba-ganam-tebenadatijogub-liwutanapiz.pdfIn PDF document text
    • http://files.it-ninja.nl/uploads/1/3/1/4/131452991/9511649.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/1/0433/4374/1083/files/bijawevar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/gekegarijoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/13546624489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/keninar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9957/6733/files/5087424479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8876/3298/files/canon_in_d_violin_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/16348116442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0374/8263/files/balanced_scorecard_strategy_for_dummies._download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/vivewevurujejoliwugeferem.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_off00008198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8198 5324 bytes
SHA-256: 86422f971f7e2daf3a38fd04a40a7ed043db92ea4ab6712d9ddc1a3f083a8349
font_01_sfnt_off000093bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BB 10316 bytes
SHA-256: 63ea402c896e9c8ce2bbe19dccbbbde275cf0a755be8ec6c816c3ca0954e6a78

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