Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2205b9dce1ca015…

MALICIOUS

PDF

44.5 KB Created: 2020-08-11 01:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c827d9d7e0c1ab8c09532967d86bfc9 SHA-1: a1cb4928002cbb6b1dc273439f16b541e1195651 SHA-256: c2205b9dce1ca015d9f8400bdcb80e7d0e8660610c4e1fde11da2918923ce33c
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, directing users to 'https://ttraff.cc/pify?keyword=properties+of+characteristic+function+pdf'. This indicates a phishing or social engineering attempt to lure the user to malicious infrastructure. The document body itself is heavily obfuscated but contains the same URL, reinforcing the malicious intent. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.cc/pify?keyword=properties+of+characteristic+function+pdf In PDF document text
    • http://files.gracebiblefellowship.org/uploads/1/3/1/3/131379117/gunedujitewu_gonegapodona_ratajagediver_kinogedejag.pdfIn PDF document text
    • http://files.vintagecycling.org/uploads/1/3/1/8/131857690/gutadowatupuwekal.pdfIn PDF document text
    • http://files.mrstrizz.com/uploads/1/3/1/4/131437307/vofapi.pdfIn PDF document text
    • http://files.allianceheh.org/uploads/1/3/1/1/131163643/xilone_fanemer_velivo.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/1/0433/6209/1163/files/84124645111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/94560372737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/texewanuvumexarope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/gugabekinujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/niwuwukanezex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6910/3528/files/save_tumblr_likes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/32658843816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8686/3783/files/a_story_of_yonosuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/dufiditelapa.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 8

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_off00007171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7171 5212 bytes
SHA-256: 08a53bddc7ded51c3731dc6d752137a213656aff8ed4886ee1eddcb9bbc61360
font_01_sfnt_off0000831e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831E 9836 bytes
SHA-256: 92215a4ebdd39571b977c2338c4f6ec24f2454f0459fcaf8c904d00ca3753d7f

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