Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b3caf63b2af48e…

MALICIOUS

PDF

67.2 KB Created: 2021-02-12 21:18:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1d7eab075184b5992da07e1926bdf2bd SHA-1: b1045498190f67f6cbdcb19ddfd6ac7566319254 SHA-256: 01b3caf63b2af48e9f32e4a4e00866f0fffc764d4e3b9d33d475e6df55c285ca
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=shareit+apk+android+5.1 PDF link annotation
    • http://form-lnstagramverifiedbadges.com/tangerine_dreamhc7gg.pdfIn PDF document text
    • http://nonretloli.site/jazedenazolidalisikewagearezd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446496/normal_5fdec5a0071bb.pdfIn PDF document text
    • https://mebuduwo.weebly.com/uploads/1/3/1/4/131453299/c5d103.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413455/normal_5fcc6289e3028.pdfIn PDF document text
    • http://pek-24.cc/dotomeronuxemesagatv09e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459788/normal_5fcbf6ad1d5bb.pdfIn PDF document text
    • https://pexagizim.weebly.com/uploads/1/3/0/9/130969673/zejasorujamuzo.pdfIn PDF document text
    • https://zipixaxunisegon.weebly.com/uploads/1/3/4/6/134625234/c8c7e328fc7.pdfIn PDF document text
    • http://mirror-x.org/engineering_technical_report_format18f9v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/riding_breeches_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/busarevurewot.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/32460616981.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/selisexas.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC881 5212 bytes
SHA-256: 11d4c449397093473683befe71e9e7c9c20da8664713cb613ac9d149ebd65aac
font_01_sfnt_off0000da3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3B 11624 bytes
SHA-256: 2583a841ca8024847196bb1be6dd6eba0286cc5a899008e4368cf7dbd840672f