Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c59a3c52ae996f9…

MALICIOUS

PDF

48.1 KB Created: 2020-10-30 15:40:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 194d6ede4d9501152be2550309e8b3d2 SHA-1: 8ff979426680ff732de5869aaa453a30e5d6b081 SHA-256: 3c59a3c52ae996f9e9e9f9112f7e8e250ce1d509aa404e28256f86ddf8325d17
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to SEO-optimized PDF hosting sites, suggesting a link farm or phishing lure. The primary malicious link, https://gettraff.ru/123?keyword=star+wars+age+of+rebellion+core+rulebook+pdf, is identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains this URL and others, reinforcing the phishing attempt.

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://gettraff.ru/123?keyword=star+wars+age+of+rebellion+core+rulebook+pdf In PDF document text
    • https://luzatewuxajexi.weebly.com/uploads/1/3/4/2/134265782/dcb66da4697.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/5441eb9.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/fifojor.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/tuguwusumunel.pdfIn PDF document text
    • https://mufanebix.weebly.com/uploads/1/3/4/3/134349193/birepajufotupaj.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://s3.amazonaws.com/zirojopemup/investigation_vs_perception_for_traps.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/squirrel_hill_theater_forward_ave.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/guitar_chord_progressions_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/solve_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/pakomavikipix.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/zugopesesiduzano.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/xogotagul.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/suzavasebuwax.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/78771958474.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C89 5604 bytes
SHA-256: 737845854430d0c7f213dcea133f19e74e31a5321123b53541d618fa2de6c58a
font_01_sfnt_off00007fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 10836 bytes
SHA-256: 4f85c8431e4581e1236c8416cfbdcb151faf38f1bea7884e24388101f1653eb1
font_02_sfnt_off0000a4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4D8 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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