Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58917a398095b95…

MALICIOUS

PDF

44.0 KB Created: 2020-08-24 14:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cb192963c586febc156305061ae6506 SHA-1: 27ec0554d32e37e4c3a5314db58a4cf589592232 SHA-256: d58917a398095b951c151020fbf3dc502325f20815787295e765bcd758558163
202 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a malicious redirector and link farm. It contains numerous embedded links, with a primary link pointing to 'https://ttraff.ru/pify?keyword=esl+grammar+test+with+answer+key', which is flagged as a malicious redirector. Additionally, it hosts a large number of links to other PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content through a seemingly benign platform. The presence of a 'download button' heuristic further supports the idea of a lure.

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=esl+grammar+test+with+answer+key In PDF document text
    • http://files.thevisualnarrative.com/uploads/1/3/2/6/132681670/93d40ffd2c17.pdfIn PDF document text
    • http://files.bombersdiscs.com/uploads/1/3/0/8/130814127/duwenupatu.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/1/0428/3770/4867/files/kavajidamilavufomopafifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/42854487380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/maxularosonan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8947/7278/files/mugibofomotikunokamir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/working_capital_management_project_synopsis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/excel_list_worksheet_names_in_cells_vba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4516/7008/files/hampton_bay_outdoor_lighting_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/sure_big_odds_tips_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/gipibujisux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/fotalevenok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4178/files/guwelediraxurazaki.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 6

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_off00006c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 5316 bytes
SHA-256: c55b51f4a04553c42407b77a57563cc4a094bbc25430a2c5af4609a038d87fc7
font_01_sfnt_off00007e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E18 10904 bytes
SHA-256: c2787c7b1445da421dbadf9a434524401f429581ee02bd84e88bee3222bf1b2d

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