Malicious PDF — malware analysis report

Static analysis result for SHA-256 302f299184a61c14…

MALICIOUS

PDF

69.7 KB Created: 2020-12-25 18:53:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdb12fed35ff8dd16926328679eb916c SHA-1: d50123458879067c010d6a237a0ad33e0b34fb65 SHA-256: 302f299184a61c14e9b3dcc60f06a383464fbf497c6566806786fa37f891a99a
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URLs suggest an attempt to lure users to external sites, likely for phishing or to download further malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=enerzen+commercial+ozone+generator+how+to+use
    • https://xewixubigikuj.weebly.com/uploads/1/3/4/8/134892453/warojow.pdf
    • https://nobakavukip.weebly.com/uploads/1/3/4/3/134373074/4702134.pdf
    • https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/wafomigijozekowo.pdf
    • https://lisopivoxo.weebly.com/uploads/1/3/4/9/134901835/3220ab31f6.pdf
    • https://cdn-cms.f-static.net/uploads/4486521/normal_5fd33febe0f4d.pdf
    • https://cdn-cms.f-static.net/uploads/4477138/normal_5fdafe4566c14.pdf
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/5411092.pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/novovuxosijuzuz_wofabunutigepuw_dugulelura.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zafijukopa/pexijidopopakito.pdf
    • https://s3.amazonaws.com/kibavutibeved/biwumuzeneligotugiz.pdf
    • https://uploads.strikinglycdn.com/files/f2699ff4-1dc3-4fde-845f-23208609b2e2/the_docker_book_download.pdf
    • https://s3.amazonaws.com/tadovu/52338914590.pdf
    • https://s3.amazonaws.com/vinivuxo/reduce_smaller_size.pdf
    • https://s3.amazonaws.com/fapaga/sozepikifuzitafageledax.pdf
    • https://s3.amazonaws.com/fotepopunaj/loi_binomiale_exercice_corrig.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d424.bin
b49f466be55bb0c86c6b54714a1d2ee3e5770cc346fe7da3f4cd85f02153c87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD424 5312 bytes
font_01_sfnt_off0000e621.bin
3abb640be8e89c523cba8e0332c3493ed2b200886fbd42fed27df36ab447075e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE621 10628 bytes

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