Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ada29c6fd5dcaa…

MALICIOUS

PDF

92.0 KB Created: 2021-07-14 02:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: aeee4c66fa6c0d7e4f9ba0e93271d6a0 SHA-1: 99b4fb481148558530cf9f89c6c142df05d860e6 SHA-256: 89ada29c6fd5dcaa1d15a483ccba0e108fae0ec0ab7a26f88f28ad35b3fc24a7
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a high-severity heuristic identified an image lure linking to an SEO redirector, indicating a phishing attempt. The embedded URL, while marked as confirmed benign, was part of the lure mechanism. No scripts were extracted, but the overall structure suggests a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5134

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=definition+for+impeccable PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8eb632f3c4128e187a230/1625877347283/22142217663.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90740b132fa36207254e1/1625884480340/remase.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec9e6e51a87c5d75ae670e/1626119791013/degunuwagetaba.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edb718fe64123bb485e98b/1626191640198/town_of_north_andover_ma.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ca349ffc3426e8a4ca5d/1625868852611/area_bounded_by_graphs_calculator.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee006537ddb5439bfa9a36/1626210406164/patagonia_andes_mountains.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edde3c6f118478735c001c/1626201660833/fimikekaf.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF21 10616 bytes
SHA-256: d534c1bd20fd5e686a4258646ec96cec96dd6c246a509c26eb455ef361efdcf4
font_01_sfnt_off0000e720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE720 21336 bytes
SHA-256: a3e1fdd9740cda89816e846cb990b2740d8037ba00bca3f22533227ba826e3e9
font_02_sfnt_off00011c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001341d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1341D 18760 bytes
SHA-256: a93da9e4712fbb1c3167580707a1e9cf0dd4f1b6f6fcdcc225424b5987e775ba
font_04_sfnt_off00015208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15208 4552 bytes
SHA-256: 6d0f9aa894de2900e73571a1a3cdf2b69e767d9abdda30f7121f1faac6915f1e

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