Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a690f1cd9984dc2…

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 04:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a076d9151bed9a5042ea7ed3be89babd SHA-1: 1dfb788b3c1744ac312364284b29923873e359f3 SHA-256: 5a690f1cd9984dc2aae96b46c47fd1bf3b0ed5c3b989bf7f60798cc9178012f3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to a redirector service at 'ttraff.ru'. The document body, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=git+pull+master+into+branch', suggesting a lure related to code repositories. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=git+pull+master+into+branch In PDF document text
    • http://files.awallowagal.com/uploads/1/3/2/6/132682936/4033094.pdfIn PDF document text
    • http://files.bollesrottweilers.com/uploads/1/3/2/8/132815752/c4b7c1c914.pdfIn PDF document text
    • http://files.masakoonodera.com/uploads/1/3/1/4/131406391/5538736.pdfIn PDF document text
    • http://files.leatherworksfordogs.com/uploads/1/3/1/3/131381374/447c482974f2940.pdfIn PDF document text
    • http://files.codeblaque.com/uploads/1/3/2/6/132695741/febikupa-safiboxe-fivami-jikitudup.pdfIn PDF document text
    • http:///path/to/repo.git/TheseIn 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/1/0433/0664/7717/files/99939693718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/38389761664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/24810471020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6009/2309/files/16381853232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/iphone_6_safari_crash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/64667601485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5721/6678/files/walovugudirer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/jikemomupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/jolozumuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/40217660486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/26062625088.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
🗂 Part of campaign: masakoonodera.com 9 samples

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_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 5344 bytes
SHA-256: 97445f9007361e74216a25fd6178409cc0a4c455a12b2d6f29798a2caa6acddf
font_01_sfnt_off000074aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AA 13820 bytes
SHA-256: c46069bc773e91aba7ccde7cf031ef5a7722a24cb81d558de0e3817f55a3d617

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