Malicious PDF — malware analysis report

Static analysis result for SHA-256 dafb2efe7512fe28…

MALICIOUS

PDF

74.3 KB Created: 2021-07-14 00:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c1bd3d8c41d132304684b081f5e72ce1 SHA-1: a830fcd139594f0f05dc706952f1092703e81534 SHA-256: dafb2efe7512fe286e03b6874ce203565676a6aab065fcbe5b849d28a3639037
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it's a phishing lure, using an image to redirect users to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and the presence of a redirector URL point towards a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/kVSxLQpkboc/square?utm_term=york+county+parcel+search PDF link annotation
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec94040f7d8d50062d24ea/1626117125028/shadowlands_best_way_to_make_gold.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee02d84ff81d3e28182572/1626211032499/269809666.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8c24ae534972f7b79b9d7/1625866827029/kikerusivegu.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7e13886d8930991a69b6b/1625809209009/42236579725.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee003e9942ff19c76ae734/1626210367271/74918469810.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eddeca7ce58f02ed93f9df/1626201802847/affect_on_people.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F4 17164 bytes
SHA-256: bb6a6e5436638507c9e786b265719cfbac2193fa9cb3f9ae13fa83256f4c431a
font_02_sfnt_off0001051f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051F 10668 bytes
SHA-256: 42abd94ca21cc0729222cf0fc5cb92985c2142bdf83b964df3d752dc62a4e017

Open this report in the interactive analyzer, or submit your own file for analysis.