Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9dd169ef7a127f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-05 04:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e13075301ad3793faf9834b8a297e21 SHA-1: c089ce63bef8786258ad4dcbea1cb5324cf714e3 SHA-256: bd9dd169ef7a127f50cd474b1feddbe713f2b8935bdf1db1a0a4f31ccee42a58
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is likely intended to obscure the final destination. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The presence of numerous external links suggests a tactic to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=email+etiquette+pdf In PDF document text
    • http://files.artistfrancesconde.com/uploads/1/3/0/8/130815080/sunuvabipola.pdfIn PDF document text
    • http://files.distinctdancecenter.com/uploads/1/3/0/7/130739369/visokikowukisu.pdfIn PDF document text
    • http://files.komisar.com/uploads/1/3/1/0/131070561/9342571.pdfIn PDF document text
    • http://files.coglpcity.com/uploads/1/3/0/8/130814124/fumutuk_zonil_roridupol_jovolapenabukuj.pdfIn PDF document text
    • http://files.karlswensonphotography.com/uploads/1/3/1/4/131453214/f14488e.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/1/0437/0645/0074/files/41925007650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/57466103081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/oceanic_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8986/1535/files/70777216935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4996/8035/files/47307499194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/chamakam_meaning_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/12986849997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0990/8637/files/77870349037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/wireless_communication_by_rappaport_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/tosib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/dupubinesejuvijez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.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_off0000660b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660B 4664 bytes
SHA-256: 49246d77dec56fa8d5a599e8a62133f1b3669d198455370c6a27984e801013e5
font_01_sfnt_off000075e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 10180 bytes
SHA-256: 5cbd7b86f644008b449c51e0dcf4a531a5641054b6021e16476094d40f9ab618
font_02_sfnt_off000098ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333