Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4a3ae0cf294be9…

MALICIOUS

PDF

85.2 KB Created: 2021-07-22 00:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dc7c1d028f57ac3ecc5a579287b4beae SHA-1: 53491fcf4913a45f2cc6a1726ed4a695fd86db0d SHA-256: 2d4a3ae0cf294be9ae67463425e5a86e189ac09a72f1b8b62319b46fb4c7d3c9
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it is likely a phishing or trojan delivery mechanism. The presence of embedded URLs, though many are confirmed benign, suggests an attempt to lure the user to malicious content or download further stages. The document body is heavily obfuscated, preventing a clear understanding of the specific lure, but the overall indicators point to a malicious intent to exploit the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/CHqDoFjlE84/square?utm_term=cobb+county+property
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee57105f7927514e3ef60d/1626232592310/39768979024.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8a2688a680031d701c063/1625858664913/cute_good_morning_texts_for_your_boyfriend.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee00f2e11d817478d5c16f/1626210546757/adding_and_subtracting_5_digit_numbers.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee6e71df3d323292d387d9/1626238577762/44034342964.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edc50c24c32e4364b15c61/1626195213092/sobbing_meaning_in_english.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8e118f107ff2467e5a4d0/1625874712827/28304480415.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4eda21d3507074231cfbc/1626664354241/konevitu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f34a9b6d5e991e36dfe56c/1626557083406/protist_study_guide.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2a9d08c10a93e5045ad36/1626515920298/different_types_of_process_in_thermodynamics.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7cc472e2584f24629af8/1626111172522/chemical_engineering_basics_for_interview.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7ab77a1add4dee1eb9aa/1626110647600/22362093543.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f7836dab09506512d48588/1626833773466/risk_priority_number.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec833a59713006cbe1682a/1626112827052/65058027219.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f6ef94784eb24dc02fc6ab/1626795924700/hello_ma_baby_song.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f75a21b1738b698dc1281a/1626823201077/vitamin_d_and_glaucoma.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee371927fa864c7d11444e/1626224409997/interview_what_to_say_for_weaknesses.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f88aeb5daaa92576c42146/1626901227926/satapugisa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f521a8bb7e64222d0da1d2/1626677673225/how_we_can_find_valency_of_an_element.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7f92386d8930991a776a4/1625815331887/betomixoxomujugoga.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecaa3151a87c5d75af8ef2/1626122801084/gipuzej.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e91d4d2210ba6bce12049c/1625890125700/tavern_101_grill__tap_house.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eda8291608af7c639e42c3/1626187818027/kulivokevitumuvezilo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60efeacebba06d2f3417c0f1/1626335951074/14656570659.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f3a2051ad9bf1c32b7d9d0/1626579461920/18909480172.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_off0000ec28.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC28 16792 bytes
font_01_sfnt_off0001043f.bin
f5ee7cb45764c36b01e276b6a324ad6ad5ac78e7e96a21d5c9feaded28619469
pdf-font-stream PDF embedded font (sfnt) at offset 0x1043F 10284 bytes
font_02_sfnt_off00011b5b.bin
167de892c6cab6e7e5be8002209e037f4027624d7503983c5d71a3bf2f3df07e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5B 16628 bytes