Malicious PDF — malware analysis report

Static analysis result for SHA-256 c102dcdbf8efda55…

MALICIOUS

PDF

42.0 KB Created: 2020-08-24 06:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 055708066ae30310e04be596cbb87cd1 SHA-1: f7bd39044d94f6d0d04c2ae3b73df5e6f3a4113f SHA-256: c102dcdbf8efda553fffd6cf23186e0ccbda16f14d160268e81257dd4b7c4841
202 Risk Score

Malware Insights

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

The PDF file contains numerous links, a significant portion of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a direct link to a known malicious redirector at https://ttraff.ru/pify?keyword=converter+pdf+para+dwg+gratis+online. The document body also contains this URL, suggesting it's the primary lure. The presence of a 'download button' heuristic further supports the phishing 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=converter+pdf+para+dwg+gratis+online In PDF document text
    • http://files.durhamshowcasefestival.com/uploads/1/3/1/4/131406344/surejoxuvam.pdfIn PDF document text
    • http://files.shreyanshjain.net/uploads/1/3/0/7/130739986/fb6d2f8301.pdfIn PDF document text
    • http://files.adameccleston.net/uploads/1/3/1/4/131411596/1394e81fcefd8c2.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/1/0434/8510/2237/files/graphs_in_access_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/gumifurusak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/70856345438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/minecraft_1._14._4_apk_award.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/mamuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/alif_novel_episode_8_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5435/6897/files/visadesekulolivuruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/xirebewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/17948681613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1782/files/identifying_functions_worksheet_8th_grade.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DC 5172 bytes
SHA-256: 5a4992344cdb569d25d54143e8c68f78eb2c2abcfa62e62caf36aa8166ad30e9
font_01_sfnt_off00006a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 10044 bytes
SHA-256: e33a40cd7039fdaa099b16981a66245017544a8b84b36b520aa5192f5e2efe32
font_02_sfnt_off00008d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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