Malicious PDF — malware analysis report

Static analysis result for SHA-256 341c0156500da414…

MALICIOUS

PDF

78.0 KB Created: 2021-07-14 03:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c74b5022d848f2edf88187f4e1b79472 SHA-1: 6af4cb486dbf951e1729aa1582cefde593b530a3 SHA-256: 341c0156500da4143006c140e702bdd776230d79ff1f051564e93194b1618c11
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was flagged by a machine learning classifier and ClamAV as malicious PDF phishing malware. It contains multiple embedded URLs, suggesting a phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure and embedded URIs are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/k6oGaauGqGM/square?utm_term=uniform+system+of+accounts+for+the+lodging+industry+pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e847233e39e916afed871f/1625835299913/jukifidewut.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed96df5e50ea0df8dfa62c/1626183391873/51916116623.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edd40f37ddb5439bf5c06c/1626199056102/mobile_observatory_free.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e943f537cb904475610c23/1625900021626/refuse_chamber_meaning.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec94ae704a383bbedaeb1c/1626117295134/jitarimosubozu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eceaf2493b43382086c108/1626139378713/political_gimmick_meaning.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edb79803cb9e0b597ba185/1626191768676/zetozomewosipikevuruvifif.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e883dc37083541b5f623/1625876611805/comedy_of_manners_in_english_literature.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cde7.bin
45dccad6e97cda56d3782a3522e1de993fe9c09117f6a8ef525887dbec39bbe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE7 16632 bytes
font_01_sfnt_off0000f91b.bin
404f22a94b37ab8ccd183f32a3a4ca97d6b2647fe2249febc29d9702210a1c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF91B 11288 bytes
font_02_sfnt_off0001133d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1133D 16792 bytes

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