Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc4578aa6fb17ab…

MALICIOUS

PDF

36.9 KB Created: 2020-09-18 23:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2670f9cf08a85c9b8cc3982bcde2d455 SHA-1: edd16a9de809d7212c6861d25dd0930f3f1f71e5 SHA-256: dfc4578aa6fb17abe19ee2e0e54bab5ec8e44b68cd2a22f2b0b7ea6bd11b115f
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free download for an organization theory PDF. The link leads to `https://ttraff.club/wix?keyword=classics+of+organization+theory+pdf+download+free`, which is a known malicious redirector. The document also contains a large number of external links, many of which point to shopify.com, suggesting a link farm or SEO manipulation tactic to distribute the malicious URL. No scripts were extracted, but the primary attack vector is the embedded malicious URL.

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.club/wix?keyword=classics+of+organization+theory+pdf+download+free In PDF document text
    • http://lesivo.foodandmoodcounseling.net/uploads/1/3/1/3/131383314/zewaforuzadafikegu.pdfIn PDF document text
    • http://files.andthatmeanscomfort.com/uploads/1/3/1/3/131380299/bumaj_julekukipe.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/1/0439/4532/8808/files/fexisuwiweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/great_food_fast_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7971/9330/files/63163132825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4657/files/1262995002.pdfIn PDF document text
    • https://9cc39424-e5e3-4a2a-9434-4265e6e25f7d.filesusr.com/ugd/10e3af_eadac10f1c6045e2b0bb9a2c8da8eecb.pdf?index=trueIn PDF document text
    • https://e43bf528-42aa-4330-9432-55e1e205c5fd.filesusr.com/ugd/529385_2290d5f4c33141438d4946713a14b16d.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/95880143606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/roleriguf.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_off000043fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43FD 5472 bytes
SHA-256: 52cc4247fedfb43ba56b519fa89e14d58384fe7b854b63a0487e29513f87bf5f
font_01_sfnt_off000056a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A4 9960 bytes
SHA-256: 45b17a0a572b7439490af9b31eb625ab22103b36ac523a1874d769979f374986
font_02_sfnt_off000078af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.