Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db52416b0ebb0ea…

MALICIOUS

PDF

76.1 KB Created: 2021-04-03 06:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cac2ac9d05b601e06247b81335aa5e9 SHA-1: e6dceb24de8f9725e8376095983d984f75eff42b SHA-256: 1db52416b0ebb0eaa0fb43742b7b8ac310250f4c9c980aff1097aea92ee5c840
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Powerpoint templates free for information technology', aiming to trick users into visiting the malicious URL.

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://resalured.ru/123?utm_term=powerpoint+templates+free++for+information+technology
    • https://cdn-cms.f-static.net/uploads/4383798/normal_6059c40a03e35.pdf
    • http://sujolisake.medianewsonline.com/pesija.pdf
    • https://cdn.sqhk.co/tibapopedeka/Ljfgghg/thrifty_shopper_watertown_ny.pdf
    • https://dosijarirolid.weebly.com/uploads/1/3/4/6/134668623/7633218.pdf
    • https://static.s123-cdn-static.com/uploads/4427499/normal_5fe3e44fa2693.pdf
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5fcdd07104e7d.pdf
    • https://cdn.sqhk.co/rivitovolu/547igPs/run_dat_back_turbo_meaning.pdf
    • https://cdn.sqhk.co/togodawexu/lXgiQje/fitbit_versa_3_vs_versa_2_size_comparison.pdf
    • https://tajafakedebufu.weebly.com/uploads/1/3/1/4/131438499/basifutizaf-dukulu-levafoz.pdf
    • https://cdn-cms.f-static.net/uploads/4502567/normal_602b434dd697a.pdf
    • https://cdn-cms.f-static.net/uploads/4456667/normal_602b50ecc678d.pdf
    • https://cdn.sqhk.co/xonipavu/hcziah6/80035209370.pdf
    • https://static.s123-cdn-static.com/uploads/4420587/normal_5fe30b7182295.pdf
    • https://cdn-cms.f-static.net/uploads/4369932/normal_605bb1f32234e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/susonanezaj/game_android_terbaik_di_dunia_2018.pdf
    • https://s3.amazonaws.com/mejifavo/boyz_n_the_hood_movie_300mb.pdf
    • http://pawepeg.atwebpages.com/46039897501.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec26.bin
2b110ca0fb8ef8942e0d7b6bb3214104bf98260cad12042e7528137d4dd4c7fd
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC26 5624 bytes
font_01_sfnt_off0000ff30.bin
4e4add895eb9ea87f49eeeddedca4d36faca5b764ab577d072c664a990eb662b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF30 10524 bytes