Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ecba7a22b58b9a6…

MALICIOUS

PDF

96.0 KB Created: 2021-07-25 00:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4653733de4dbd0103b6cd1212e49f168 SHA-1: bcbeea087ec3950bef74a5f227b5e0117e46d288 SHA-256: 5ecba7a22b58b9a6a51ec995805191aad513cd133e2db21d378dc7af7a2d087e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by both a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being labeled as benign, suggests a potential phishing or exploit delivery mechanism. The file's structure also shows duplicate object bodies, which can be used to obfuscate malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/nCRFBnYrBHY/square?utm_term=vernier+caliper+reading+practice+pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f1b7903c858a7790bcdcc2/1626453904258/vikas_science_activity_book_for_class_7_answers.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c1482aed951818547363/1625866568477/pdf_to_excel_ocr_free_online.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60fc801736f77b35a904acd2/1627160599435/where_can_i_watch_alaska_1996_full_movie.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1eaa1de9a334cc7df4603/1626466978074/quranic_baby_boy_names_starting_with_r.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f87d87cc3f8a3514d4dd02/1626897799578/24870050157.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3249c81f38b20588482a2/1626547356338/play_cribbage_online.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4b222b84a576e6c0fab5b/1626649122935/52397020128.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f5fc5e2b99fc19a5dc4534/1626733662439/78736639827.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee79b9462f394a1e45ada0/1626241465402/woponinafegeniba.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e92dfdaa30721e65efa3a9/1625894397227/hoopa_and_the_clash_of_ages_full_movie.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee309fdf274736e0aab09e/1626222751360/15_stone_in_pounds.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60fc830d5a9e5d2bfb437177/1627161357972/totitutikigebobonod.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec929c9a1cf201f805ed16/1626116764647/papisozukegiripesifu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7c3c3dbb92d34f5ad8400/1625801667747/vajevusafiruriralevi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60fad3f80931265c8fe00697/1627051000403/how_to_reheat_maggianos_spaghetti_and_meatballs.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f567dd668793736d4a0157/1626695645536/rewaleke.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0917796f710445cd5f06e/1626378615508/25819413182.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f6.bin
201ba903abc01d28beb27cef7f40d2af343ec00b7fa9fea7e686cd06b399a811		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F6 18296 bytes
font_01_sfnt_off00012950.bin
89e7ef6f3309e810603d69a6e8d1aaa09b5e17c7578d40e70443ffdeb9a1e306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12950 10476 bytes
font_02_sfnt_off00014102.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14102 16792 bytes
font_03_sfnt_off00015913.bin
53fbc5ce9513e031d91835b3621b08c698a4e2412792db302dc4dd80bbbba9c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15913 16380 bytes

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