Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f273a46d91264b…

MALICIOUS

PDF

73.6 KB Created: 2021-03-21 05:45:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 6c3b1a4ec3ad7efcda4c423545795a13 SHA-1: 175bc4755e0cf39d56a9bf243980628000b8aab2 SHA-256: e0f273a46d91264bd55db1ad298c0f6925a9aab42fae7c0bb712142fb6b1362c
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, with one prominent link pointing to a URL that appears to be part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, suggests a lure related to a service manual, likely to trick users into downloading a second-stage payload from one of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/strik?utm_term=mackie+sr24-4+service+manual PDF link annotation
    • http://bridgecommerce.com/mutisusovukefezupxtxg0.pdfIn PDF document text
    • http://trendmobile.ru/how_to_light_pilot_on_old_boilermts6h.pdfIn PDF document text
    • https://cdn.sqhk.co/diridenafa/ZzjfyFS/gebotonupasijudoduwove.pdfIn PDF document text
    • https://cdn.sqhk.co/liwijodi/bhcdCuh/bangala_kathamlo_song_free.pdfIn PDF document text
    • https://bolopuboj.weebly.com/uploads/1/3/5/2/135295375/tuvusifeloregu.pdfIn PDF document text
    • https://lemusudavigi.weebly.com/uploads/1/3/5/3/135395292/3311508.pdfIn PDF document text
    • http://salonhq.xyz/dewalt_thicknesser_dw733_reviewsrv7y8.pdfIn PDF document text
    • https://cdn.sqhk.co/tatomaxeriri/bjckgdx/89399643488.pdfIn PDF document text
    • https://cdn.sqhk.co/dokiladigana/d6Dhggc/lagu_albi_nadak_lirik.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/FjgjfLe/freedom_or_union_freedom.pdfIn PDF document text
    • https://cdn.sqhk.co/lodikorep/ejahedH/factory_of_heroes_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/gi4hfyW/97043819358.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/Bhc8ieI/black_men_s_haircuts_fade.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/i7YifC3/tales_of_crestoria.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8b6c88ce-11bf-4374-a9ed-ab8687335db8/53601074193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b28873e2-2d10-44f4-8ea3-856cdf397a4c/35360356081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1be4d13-36a8-44fe-99da-789eb7add15e/94700564524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35103007-745a-4172-ab5e-26f6f4db6a9e/can_you_sleep_in_monthly_disposable_contact_lenses.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CE 5020 bytes
SHA-256: ee1974754cda0cf055d717dcb381fe9106b3ea54bcdecb06c4328eec53e891fa
font_01_sfnt_off0000e3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CA 12132 bytes
SHA-256: 38a447cd08db87fa5c1351eaca2c6e6d2eabf95574a4bd919f7d7dd0a4da74d4
font_02_sfnt_off00010b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B04 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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