Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d693164080e9a9…

MALICIOUS

PDF

74.2 KB Created: 2020-12-26 05:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c207796c7fe1c7520d3b5fd98f5ba512 SHA-1: db42ad7faff371fd074b4947c03d9ba3a21a740c SHA-256: 60d693164080e9a9cb3713bbcc94e93e29c3dbbc46689786d3feb1b931567c6a
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, with at least one identified as a malicious redirector. The heuristic firings indicate the document is designed to link to external, potentially malicious content, and has been flagged by ClamAV as a phishing trojan. The presence of numerous links suggests an attempt to create a link farm or direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=meet+the+engineer+guitar
    • https://cdn.sqhk.co/ditetona/Vhhghfr/mujaro.pdf
    • https://cdn.sqhk.co/tuxisilogok/hfgjaLL/82590633950.pdf
    • https://cdn.sqhk.co/goluxewimabu/NtcRWjd/portable_folding_picnic_table_for_sale.pdf
    • https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/muvuranijopejob_juvusib_rulurani.pdf
    • https://kozugirufeji.weebly.com/uploads/1/3/4/8/134884007/2691a9.pdf
    • https://cdn.sqhk.co/nopawuwam/jcgcjbv/inside_out_movie_characters_sadness.pdf
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/5476235.pdf
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/duxafamokid_gefubexa_jemajib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/6af501b4-6042-4bd6-9ec6-7f30835f6152/youre_welcome_moana_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/2c75547f-ec16-44c4-9e84-29cd11c1e5f4/55177164522.pdf
    • https://uploads.strikinglycdn.com/files/e02629cc-8df9-4130-9412-335756f7a76c/the_art_of_fallout_4_free.pdf
    • https://s3.amazonaws.com/pobixedele/weak_acid_and_weak_base_titration.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc77.bin
32216f2c878a5b1fb6e2e6ca6545fe380386f1df82fa407a46cb3c6109909583		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC77 4516 bytes
font_01_sfnt_off0000ebbd.bin
e32c8352579b17586be922a12b0b1374c2de1ba9470d1f3c4ae06417c1a3bf57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBD 9884 bytes
font_02_sfnt_off00010da6.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA6 4324 bytes

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