Malicious PDF — malware analysis report

Static analysis result for SHA-256 793b0f8ebd62a2e7…

MALICIOUS

PDF

76.0 KB Created: 2021-03-30 12:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e097516118235d43ab753246c31f772c SHA-1: dad6b1fb32f43a1db2bb74caee8eb9cb4c974868 SHA-256: 793b0f8ebd62a2e7a708ecee0ef2ae958d2a50ebad00db7568bbab5be3ceadb5
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF document is classified as malicious, exhibiting characteristics of a phishing attack. The document body and embedded URLs suggest a lure for downloading cracked software, which is a common tactic to distribute malware. The 'SE_CLICKFIX' heuristic indicates social engineering to bypass macro restrictions, likely by prompting the user to execute a downloaded payload.

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/award?keyword=wondershare+pdf+to+word+converter+4.+0.+1+full+crack
    • http://tofotibuwul.sportsontheweb.net/cant_push_dyson_on_new_carpet.pdf
    • https://cdn-cms.f-static.net/uploads/4393916/normal_605b85e47e7a5.pdf
    • https://cdn.sqhk.co/redusebi/g6y6Rge/epic_conquest_mod_apk_unlimited_stats.pdf
    • http://pobesegu.scienceontheweb.net/fifty_shades_of_grey_audiobook_free_download_mp3.pdf
    • https://static.s123-cdn-static.com/uploads/4460686/normal_5fee048dc9c3a.pdf
    • http://zoguponuwuxoli.medianewsonline.com/the_game_of_life_instructions_2016.pdf
    • https://cdn.sqhk.co/matikefateri/igwhhF3/change_color_of_app_bar_android.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vefodipox.myartsonline.com/85378369428.pdf
    • http://nokejufesuw.atwebpages.com/22087591546.pdf
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_af27ab5ee4cb4f0798864bf53741f8f2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9fa9e3ec-edf3-4b87-ad55-db31bbf9f42d/alimentos_y_bebidas_no_saludables.pdf
    • https://uploads.strikinglycdn.com/files/e20ebe2b-e449-44db-8b87-7f94e0507608/how_to_make_a_older_woman_fall_in_love_with_you.pdf
    • http://kowelakava.rf.gd/thyroid_function_test_nice_guidelines.pdf
    • http://sekopute.epizy.com/ludipumajigixuzozawuxapi.pdf
    • http://vovugawe.rf.gd/current_affairs_2020_in_english_with_answers.pdf
    • http://nagivozuzosawax.rf.gd/numojo.pdf
    • https://b24182fa-1fee-416c-9f57-41d8a36573e1.filesusr.com/ugd/1cc367_1388df36f90a40799acd51c7cdcd3498.pdf?index=true
    • https://89511c73-251b-4bee-a1a5-5f4bd4863124.filesusr.com/ugd/f24cb8_e0b809a6e4a74a2dad5c98d9cb57451a.pdf?index=true
    • http://lodaxiku.rf.gd/walking_ice_axe_sizing.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_off0000ea5b.bin
c4993590112f457832eea2100920352b8a34fbd127fa19d3e222038f4dae2930		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5B 5788 bytes
font_01_sfnt_off0000fe3f.bin
080d9805b1fa337f33611935e851701ac4268a96a9c1c2c80865c3bc16b28521		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3F 10556 bytes

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