Malicious PDF — malware analysis report

Static analysis result for SHA-256 c40944b28d74bb95…

MALICIOUS

PDF

88.2 KB Created: 2021-07-22 00:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b1cc6380bb51b55f11b03ae1e4183f41 SHA-1: 8b1a054c8af4dcd1c08b16ac5e7a81a1c8299869 SHA-256: c40944b28d74bb95e4ccc06fb12481fef05e3ca8e33fac12c0bbf4e74be25730
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://cructi.ru/square?utm_term=article+13+federal+constitution+malaysia
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f165d5c08012782f83840d/1626432981244/53508516410.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9867b3b63f0898f3cdfe/1626118247842/2353286022.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f64b93d7d722325d766bc4/1626753939525/saladasifugirogaji.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edc4ff30d23a755060dfc9/1626195199943/bury_your_face_in_someones_chest.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec996c934d360eb28a4990/1626118508661/tefasilezalodizufano.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edd6f3a9d1f62037e1e4eb/1626199795915/one_survivor_remembers_questions.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e76fd2626e5d2278f5dd6e/1625780178466/zosorekakopakoruzikaxu.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec76904c0b954f9ea2ecb4/1626109585038/professional_ethics_multiple_choice_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec92910e7a3c5fba3ec025/1626116754088/top_market_gainers_today.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec9f5fe4ca3800a11a3100/1626120031752/kasuzubi.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4a0eba9adb72803b57230/1626644715686/67842369724.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e90777dc37083541b7bc38/1625884535248/thank_you_jesus_for_the_cross.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7902de8c3264fe5dd690/1626110210320/997752457.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee6c72f6c772366d30e3eb/1626238066644/sakomagufokot.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0c1c4bba5ad6f836eb5af/1626390980716/stack_meaning_in_c.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f3655ee13ee97666093c11/1626563934168/30973740291.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f38d2454c26a0cc3fe9f43/1626574116588/pray_to_be_blessed_faith_to_be.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f6fcb612d0063e7e83e9b3/1626799287021/age_of_empire_3_manual.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4bec870ff22042a14f3c9/1626652361266/tovotutirisobilo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f560e98a396f1703b6db7a/1626693865892/27482376831.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f3c463ce637c25833f203d/1626588259443/43377974255.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94a1a787dde1a90af49c8/1625901595014/72914339207.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_off0000f4b8.bin
3f38d06dceb7b76eddcc23d8a9b32295726e8861bf9b1e9517ef7bf67b2c7bd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B8 16200 bytes
font_01_sfnt_off00011ebf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBF 16792 bytes
font_02_sfnt_off000136d6.bin
47fdc66785d30d608e075b19f52bfc06ea2e94caefca3593c0b76188f1828ca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136D6 11056 bytes

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