Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fcee5f6384e33a…

MALICIOUS

PDF

83.7 KB Created: 2021-07-22 01:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 48f1a8c8ad051a428c64faf024d1613e SHA-1: 0d9e643fd69d43e15e1260524b01282f9c68dc99 SHA-256: 97fcee5f6384e33aef77459ee8f2079bd68e899510a745a9b0920d424ac99340
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. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect users to malicious content, likely a phishing page. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/W5vEtEh6t-A/square?utm_term=the+simpler+the+better
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7b747d56f0f36126f3da5/1625798471543/tokudemugedibuwibisudupu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1962825097a30fc558367/1626445352428/vazexiz.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f8016e019e4f30b2acb4f7/1626866030617/86224223273.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f897f015b3010569c71f0c/1626904561010/bible_passages_about_courage.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f63619f3a396036e348525/1626748441364/how_to_make_password_protected_file_unprotected.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee37704d490f6727517991/1626224496324/how_long_does_a_basic_background_check_take.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f5c7b9af73af57167698ee/1626720185949/35193353416.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f89c9c3e1092304966f41c/1626905757085/89080976801.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0174c79f953043cbf7911/1626347340804/students_love_quotes.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee6bbe114e6b7b7de9a998/1626237886960/funny_things_to_say_answering_the_phone.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f08d03e3f0fd10d4e3133c/1626377475443/what_is_the_meaning_of_recycle.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f532186d5e991e36f67606/1626681880193/97342157808.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f393adcba7b71501e99caf/1626575789480/spanish_for_pear.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9005c3b7e7c63344eceef/1625882716696/anime_style_fighting_games.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efe4ba97dca740078c8987/1626334394296/peluroxisuzufuzex.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f04e6276588c4ecca1507d/1626361442646/roman_number_of_10000.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed9c33c8312e4ee1de3110/1626184755596/a_sketch_of_a_hand.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0c8b5fcdff1298e5035b5/1626392757327/fisorofemenunivugelama.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7e98c217102653d5b14b/1626111640781/how_to_color_on.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8ff3e7718717d762f424/1626116084016/19455626009.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f48fdece637c25834754f3/1626640350334/27175812811.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f6751ab2b0835cff9a9039/1626764570384/review_of_pharmacology_by_gobind_rai_garg.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_off0000e79f.bin
824153ef159582bfc64fa908916e7512e5020a291f0f2806f9751d625f0ccbca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE79F 16388 bytes
font_01_sfnt_off000111c9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111C9 16792 bytes
font_02_sfnt_off000129e0.bin
21b70605cafa55e502c9c35442704b65a316e32ca8472bede357e7c30de94888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129E0 10232 bytes

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