Malicious PDF — malware analysis report

Static analysis result for SHA-256 122b5c683b183dd3…

MALICIOUS

PDF

39.0 KB Created: 2020-08-02 11:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce7b781db93717a8770998952c013141 SHA-1: 223d9bd8c0632d21a6cf681a5662ba4778800ee1 SHA-256: 122b5c683b183dd346ca6e13bf6254a5c08861ec05f954007fe92a5b4eb988eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, including a redirector at 'https://ttraff.cc/pify?keyword=how+to+bold+on+discord'. This redirector is likely used to obscure the final malicious destination, and the presence of a large number of PDF links suggests a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness.

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=how+to+bold+on+discord In PDF document text
    • http://files.thurmontmainstreet.com/uploads/1/3/2/7/132712163/zodukunokizak.pdfIn PDF document text
    • http://files.dartendistrict.com/uploads/1/3/1/8/131856381/jarukid.pdfIn PDF document text
    • http://files.devonfisher.com/uploads/1/3/1/4/131406827/dofosud-xopexi-vodawopefitaf.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/1/0432/2865/9874/files/32505567686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5661/8917/files/konexofirodekevosig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/disjoint_set_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/gevelulabufozudiritata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/31116186882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/7147137221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2545/4488/files/53190349677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gojifazuxosupimuron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3617/0657/files/12177436015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/zexevexufumir.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_off00005c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B 4916 bytes
SHA-256: d6aa56ab9d7922ecb2cc8234e213187147c60772a73a97579a202ce020db53c7
font_01_sfnt_off00006d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4D 9992 bytes
SHA-256: 7b18570d7807187b30a611eda89162901f73a35b0afd2cfa13150d4e389ed6de

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