Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eac94c16a4ee197…

MALICIOUS

PDF

78.9 KB Created: 2021-07-18 23:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 90fd99ee13106451437ff939d3c701f6 SHA-1: 0689c17d4ecd03d02b0c9c815e4b2ca8bedf046f SHA-256: 0eac94c16a4ee197e195b06ace09d1544a2f73657cc580341fa4a461526b828f
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a redirector link used in a phishing lure, suggesting an attempt to trick users into downloading further malicious content. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the presence of a redirector URL indicates a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8287

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/sq/ugae/~3/5JeRQhMeIYg/square?utm_term=but+for+sure PDF link annotation
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eca8d4934d360eb28bef58/1626122452970/best_place_to_keep_money_short_term.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e90ebe320dbd0de2806586/1625886398782/vapepusazigapeb.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7a0f057d2352c92790c77/1625792752164/73206271524.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d435f2d6bc217f4f83b5/1625871413972/what_has_five_rooms_but_one_door_riddle_answer.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f262db1db272198f8d6f98/1626497755232/mabefifobukizusaw.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8152b6dedd3ae1687daa/1626112338535/whitco_pressure_washer_owners_manual.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_off0000d49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49A 9956 bytes
SHA-256: 89e0f742963b6e1df77c1f6bfb4dbde46566d18382fcbc8632fbb09f0b15adc7
font_01_sfnt_off0000eadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADC 17128 bytes
SHA-256: ca16efba9719b3c6bb64ad99f1504b5721e5510b31d7d566805236f77dc90b3b
font_02_sfnt_off000117e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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