Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d58447890d3e329…

MALICIOUS

PDF

69.6 KB Created: 2021-01-13 10:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: fc347acc91585de927341eb3893725ff SHA-1: 833718a11ae7b39172d3aa88cc3292ec33feb10e SHA-256: 0d58447890d3e329f570f56a70a44cce56b1e06bcfd3061397a10beeec3a951f
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://site-1224777.mozfiles.com/files/1224777/zajunijafugupofivuf.pdf In PDF document text
    • https://s3.amazonaws.com/mulerux/classifying_quadrilaterals_worksheet_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/absorbability_of_different_iron_compounds.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/norton_antivirus_crack_version_free.pdfIn PDF document text
    • https://site-1173169.mozfiles.com/files/1173169/pro_hockey_teams_in_new_york.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475989/normal_5fdc1ab6867ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453336/normal_5fa2df63d76d5.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/ZiNFmtG/48839945209.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/zofamabam.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/88431270437.pdfIn PDF document text
    • https://site-1178312.mozfiles.com/files/1178312/zefifefigesekorolijediwet.pdfIn PDF document text
    • https://traffmen.ru/123?utm_term=contingencies+of+reinforcement+rbtIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d55a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d55a.bin)
    • 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 extracted file (font_00_sfnt_off0000d55a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55A 5004 bytes
SHA-256: a307e034a17fbd7a3bd36a9cd4fe1b9a2c987f34608a3755fae72a18699f5370
font_01_sfnt_off0000e653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE653 10240 bytes
SHA-256: a338e5f736ce4b50563ad81b25a0aa6a2fa12d04fba8c92f34c64425fbf7179b