Malicious PDF — malware analysis report

Static analysis result for SHA-256 9127d91f97805c60…

MALICIOUS

PDF

85.8 KB Created: 2021-07-21 21:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 77dce64909637823dd5ed9d99164d5b6 SHA-1: 9f602c18d25aab9eee15f98015c8f5d742e603bc SHA-256: 9127d91f97805c60b9a88e821b97b9b3ea9fca913e3cbdadd34061b17c8c5416
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 PDF contains embedded URLs, one of which is flagged as potentially malicious, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards an exploit or malicious content delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/UQ8tT55rDuk/square?utm_term=different+types+of+referencing
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7e15d4454ab0ddd863bb2/1625809246112/zefemalerawadikulikepuke.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f75353f2411a2ab33fd94d/1626821459786/all_synonyms_asked_in_ssc_till_now.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e205f229ba2ea833dc7d/1625874949659/vekawafuvu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1b8187844fe2dee986203/1626454040611/torn_medial_meniscus_icd_10.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ede002bf52576c62474464/1626202115046/sedofomuvujunudojulawef.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f5a083bf110d63cc7ad430/1626710147345/ought_to_have_meaning.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f7ba2567b36875348aaa6c/1626847781700/29238370195.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f75062ebab8c07aace0053/1626820706265/29779078248.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7433474819b0d1983d78d/1626817332242/runoj.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7b5056e46386ca3be7f15/1625797893208/oc_11th_commerce_notes.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca572c32416487af2aa97/1626121587084/39007576971.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0c6fe625deb121689f05c/1626392318485/nature_of_culture.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f37d0551c2e8609852535d/1626569989562/factors_that_promote_wound_healing.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f3abe19ee5897bffa64d8c/1626581985858/tikuvegodufemuzabewof.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f600ea9c4bde03a9845945/1626734826917/49967846836.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1b516cc59ac50dbc02216/1626453270370/47457832481.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8d30c1d90976278aa029f/1625871116130/nonton_fast_and_furious_6_full_movie_subtitle_indonesia.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f409fda8f65e35b6e01c17/1626606077978/eurovision_song_contest_1987.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e922742c5c2f6215c90c06/1625891444784/hollywood_park_by_mikel_jollett.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0220e4063550b157df662/1626350094463/sixat.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_off0000ecc6.bin
13b9fb775736e098a11aee4548ecd541f0af040395d47a3e115ca63792df700c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC6 10560 bytes
font_01_sfnt_off0001050a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1050A 16792 bytes
font_02_sfnt_off00011d1c.bin
970936ef85bb610f347f3a0c2d38eec3f702bf7bffdced8f6f6440bdfa9a3853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D1C 16996 bytes

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