Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc49bedd5f75b89…

MALICIOUS

PDF

81.3 KB Created: 2021-07-12 20:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c2dc3ad429fdb74bf30280a79facfb5c SHA-1: 9eea70bccec9e39bc8ed067422a26291e392cf01 SHA-256: dcc49bedd5f75b89ece9bd92a3d09a69acae1da139066c4f5b649ecc128454a8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojanized PDF. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and detection results strongly imply malicious intent, likely involving user interaction to download further stages or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/WVKuihPcy9U/square?utm_term=august+act+date
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7a91952059f1ec1e14975/1625794841234/red_headed_woodpecker_washington_state.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8a79f3817d36d1155b4ff/1625859999730/44108838404.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7def67baa26076bb37a3/1626111471320/3_letter_word_beginning_with_x.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e9476f37da2614570f65f5/1625900911113/average_life_expectancy_by_country.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8d44009171274fed7c7f8/1625871424948/68095228098.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ef163ba7d954d543d576/1625878294512/puferakitalukodajawifesa.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7e8e5978cb5ccaaa52e8/1626111630918/the_test_angelica_gibbs.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e78b7fdbc52028c83ac03c/1625787263163/open_link_in_new_tab_in_chrome.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e90d893ba7d954d5454f7d/1625886089272/what_is_the_difference_between_illuviation_and_eluviation.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e926212f3c4128e18a752e/1625892385227/deligaritizo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e91beb6e267257943aa7c5/1625889771184/38560234105.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7ba6580504e0a7767a3b3/1625799269107/whats_the_chances_of_getting_pregnant.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7fcba1f8f93f64ab6c26/1626111947981/96876103054.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec79ab7a1add4dee1e9ceb/1626110379399/thrombolytic_therapy_for_stroke.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8606fea8d43585900ae7c/1625841775305/81527737799.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_off0000dd72.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD72 16792 bytes
font_01_sfnt_off0000f584.bin
3ef72fdd5639115b1aa4514df7ecbcb0c878ae1b05da049bd80ddc3ca8b4e60d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF584 16744 bytes
font_02_sfnt_off000120e4.bin
2ec168e2de0d901bb85b4e5cc2c93a1b5d14b5df1d54a527533db1789789841d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120E4 10164 bytes

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