Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f7455e6dc8dba8…

MALICIOUS

PDF

80.5 KB Created: 2021-05-04 05:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e63b7e58155a2cafb5be5bf254bbde0 SHA-1: e7504331a53dce563453a42179efdaff8286a2fa SHA-256: 49f7455e6dc8dba816fceeb090895dd6a37eb49eff5ba3f6758de21ae232cfe7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL, 'https://xezojetit.ru/strik?utm_term=maytag+maxima+dryer+problems', suggests a lure related to product issues, likely to trick users into visiting a malicious site. Although no scripts were explicitly extracted, the PDF format and the nature of the URL suggest potential for embedded malicious JavaScript or other exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=maytag+maxima+dryer+problems
    • https://cdn-cms.f-static.net/uploads/4495551/normal_604424c5a13c3.pdf
    • http://leftoutclub.com/how_to_find_the_mean_median_and_mode_in_a_frequency_distribution_tablenkeyh.pdf
    • https://cdn.sqhk.co/tobepeliv/ifhamjb/97994799411.pdf
    • https://cdn.sqhk.co/zobelekivix/TgfgjhG/57964433820.pdf
    • http://dsv-trening.ru/sonicwall_nsa_240_hard_resetd3mov.pdf
    • https://torusakewojowep.weebly.com/uploads/1/3/0/8/130814967/bogoletekevet-votejamoja-salaga-fawuvera.pdf
    • http://fishland.store/what_are_the_mathematical_functions_in_ms_excel9nkbl.pdf
    • https://cdn.sqhk.co/jilebodetifa/ifOfWge/sefesinowukekivemi.pdf
    • https://cdn.sqhk.co/foxezevewa/gsrqtif/top_road_racing_cars.pdf
    • http://prizinsta24.online/78646391740wqdyb.pdf
    • https://poximixej.weebly.com/uploads/1/3/0/7/130776069/9854646.pdf
    • https://bigadamedoje.weebly.com/uploads/1/3/1/3/131384249/f7f21fc.pdf
    • https://cdn.sqhk.co/kujexelorite/qnhaghH/ark_survival_evolved_pc_cheats_weight.pdf
    • https://viramerobudob.weebly.com/uploads/1/3/1/4/131483281/jupipejeboropen.pdf
    • https://cdn-cms.f-static.net/uploads/4413842/normal_602d2d29854ab.pdf
    • http://hermidkovo.info/george_foreman_net_worth_2017fiok0.pdf
    • https://static.s123-cdn-static.com/uploads/4427085/normal_60076ba2f11bb.pdf
    • https://pesawuzopedeg.weebly.com/uploads/1/3/5/3/135327269/1885878.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kovozenamofox/cadre_photo_grand_format_bois.pdf
    • https://s3.amazonaws.com/dazuxujepov/68837716694.pdf
    • https://s3.amazonaws.com/nalifij/campus_architecture.pdf
    • https://s3.amazonaws.com/tixeligufokup/best_answers_for_introduce_yourself.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_off0000fc66.bin
4c72162da4028dda2fbebab4cfe5c9ded44fb661c60595d6194ece43220cb94f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC66 5592 bytes
font_01_sfnt_off00010f6c.bin
af9f6679176cae7f6e84d1653c7eac16b0ba206fe20f34ebc4c4842ff7f57ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6C 10876 bytes

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