Malicious PDF — malware analysis report

Static analysis result for SHA-256 da987307e0b7b68c…

MALICIOUS

PDF

88.2 KB Created: 2021-07-22 09:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e629bb99bc4ce6d647fdf12ea90ccd7e SHA-1: c716cf4de56c62851b0b035968228af704de985f SHA-256: da987307e0b7b68c30c4912dc71db74265132cf21896708d9c348a6643607ae8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains multiple embedded URLs, one of which is associated with a phishing lure. While no scripts were explicitly extracted, the presence of embedded URIs and the overall detection suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/-7-cX3opz_8/square?utm_term=gate+2020+question+paper+with+solution+pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f82dd7efcf273dc4edd853/1626877399723/cats_that_have_extra_toes.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f641a680a0646c0006cf7f/1626751398572/dr_louise_newman.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f31699ac778402356862bd/1626543769393/a_cell_is_observed_to_contain_a_nucleus_mitochondria_and_chloroplasts.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f716abd398462c09fc90e9/1626805931529/aviral_courier_tracking.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f204cd54ceab78eed1e0d4/1626473677416/air_pressure_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0f9c2311eab0d81a9c80f/1626405315057/eclipse_roleplay_quiz_answers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7c74445e16b3be7e8aabd/1625802564624/dewebixewesitur.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f407ecd68f3225905fff6b/1626605550208/que_significa_pnf.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecdeaf66c2900cf5594394/1626136239326/simple_chinese_desserts.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f56fa9668793736d4a7ac2/1626697641238/livanasifetololeguromaj.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f049215de5523680b569d3/1626360098156/public_easement_from_center_of_road.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f7793638a0583738266e77/1626831158352/konarojorefevanubiren.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f66e1c351e882d92428c4b/1626762780863/john_francis_smallholdings_for_sale.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0673f6a22b22fd8a353a1/1626367807384/keep_rocking_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec848f4027437375969aba/1626113167720/jesofujepesevejira.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60efe6a254c38e1eb6463232/1626334882403/another_word_for_scrutinise.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7b9a297884458c99ff82e/1625799074789/i_feel_tired_all_day.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e90737e6a58043b690782c/1625884471804/little_mexico_chiquito.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f18cd8afbf667b0f84a188/1626442968139/big_red_furry_ant.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_off0000f402.bin
d3cda90eb432339f5aa16d46a47387653a9bc685e47ec0fa228d8cbbd8a5cc09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 17032 bytes
font_01_sfnt_off000120c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120C1 16792 bytes
font_02_sfnt_off000138d8.bin
94430a4052f49bdd27e29c6b4b950925e6d8083578a0b9c86654b099c80bf0fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138D8 11208 bytes

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