Malicious PDF — malware analysis report

Static analysis result for SHA-256 566ba58ab031e340…

MALICIOUS

PDF

45.0 KB Created: 2020-08-10 14:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3de80d1ec85abf245710e51c05c89af SHA-1: 00831ce81df0c5c1cce00e115fba3dfef7e169fe SHA-256: 566ba58ab031e340ee1a37b8870e4b56b429a3190947dd48af2ed10a65fd9140
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 'https://ttraff.ru/pify?keyword=czasy+przysz%25C5%2582e+angielski+%25C4%2587wiczenia+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily corrupted, contains the malicious URL and several other Shopify URLs, suggesting a lure to download further content or be redirected to malicious sites.

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=czasy+przysz%25C5%2582e+angielski+%25C4%2587wiczenia+pdf In PDF document text
    • http://files.kimblevins.com/uploads/1/3/1/3/131398335/gamaxoweliluvem-zokoxexada.pdfIn PDF document text
    • http://files.kayohustle.com/uploads/1/3/0/7/130775528/72bb72b0c1.pdfIn PDF document text
    • http://fawuwivel.denverdeckandfence.com/uploads/1/3/1/0/131071157/7507533.pdfIn PDF document text
    • http://files.tiarrawiggs.com/uploads/1/3/1/8/131857305/wuroj-vuditipamitew.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/1/0434/3391/8616/files/property_manager_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/jojelesazedilifef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9748/7512/files/13339097159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/16075170469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/polaxizakukunogusuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/45962652864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/32463923119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1969/6290/files/breaking_free_from_ocd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/12868346030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/38554897131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/tukaduwadutuzubiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0527/0427/files/baixar_creator_adobe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEA 5444 bytes
SHA-256: 06bf91b1c130555f1789c368a3a4860182d572a1806b480407fc3d884c90f1e0
font_01_sfnt_off00005d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5D 11264 bytes
SHA-256: 892da781be3090ee9218e9f16fbc5c53e7b0e423e85b047e9d0e11449395208c
font_02_sfnt_off000080a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A9 16248 bytes
SHA-256: fbeccb1482ee56052ed809ec6cb7dfbc577d51b9212e43fffabc93e29761b6bf
font_03_sfnt_off000095fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34