Malicious PDF — malware analysis report

Static analysis result for SHA-256 5197bdce129a6ea8…

MALICIOUS

PDF

51.8 KB Created: 2020-08-13 23:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d08497cdc8f0cb8a2352b747242fad58 SHA-1: 2ae2b5a0360de6afb63fe79b306153195bbdb011 SHA-256: 5197bdce129a6ea8245cc3429ab170fc10c826e4b20a429aeb69d215adbec36f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service at 'ttraff.ru', which is flagged as malicious. The document body and embedded links attempt to impersonate a 'Call of Duty app store' to trick users into clicking the malicious URL. The ML classifier strongly supports the malicious verdict.

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=call+of+duty++app+store In PDF document text
    • http://files.scrap-eechickdesigns.com/uploads/1/3/0/7/130739719/5708155.pdfIn PDF document text
    • http://files.pigstybully.com/uploads/1/3/1/3/131383045/binemifu_jefoxage_firapopetag_dopikofu.pdfIn PDF document text
    • http://pituroner.themidnightstroll.com/uploads/1/3/0/7/130776485/d5ad9e5276b.pdfIn PDF document text
    • http://files.thewindingsheetoutfit.org/uploads/1/3/1/8/131871740/pojufuf_vepezu.pdfIn PDF document text
    • http://naxale.shoprivervalley.com/uploads/1/3/1/1/131163599/1237351.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5479/2866/files/apqp_manual_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/campbell_s_biology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/paketopavaduvigexesivisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/24935478170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/adjective_words_with_tamil_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/27299480246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1805/0984/files/pesofevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/15560960765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8115/3177/files/zewef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/zebusalufimewidepisibape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/17622853457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/27853607402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/gate_2020_mechanical_question_paper_with_solution_made_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/aircraft_mechanical_systems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/27299553775.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E76 4888 bytes
SHA-256: 92ca680baaf978b6150165b99831abc84e67ec7ccbb8a4360b04c4d2aa8c9963
font_01_sfnt_off00008f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3A 10732 bytes
SHA-256: 6c2cb205ba5060b018e5bb939a3744db26c3006b7dbc919167969e1f62ed31f8
font_02_sfnt_off0000b3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D5 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230