Malicious PDF — malware analysis report

Static analysis result for SHA-256 6705261c34635aa7…

MALICIOUS

PDF

78.2 KB Created: 2021-04-02 00:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 62777efd869f1d99890e88374948f2b3 SHA-1: 54b9aa9a461118b151c312f06a1d1f1ea5eec680 SHA-256: 6705261c34635aa72c97e429630ba33a56ef3ec6947d944fda9e86dc07a0eeb7
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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=twilight+saga+full+movie+download+in+tamilyogi PDF link annotation
    • https://cdn.sqhk.co/kisereta/gh6ecjc/sloth_from_zootopia_in_car.pdfIn PDF document text
    • https://cdn.sqhk.co/xadeviro/20idhuI/javascript_push_pop_peek.pdfIn PDF document text
    • http://reetodo.online/wordly_wise_3000_book_4_lesson_7dcu2gr.pdfIn PDF document text
    • http://manybigs.space/7033286889th9o0.pdfIn PDF document text
    • http://lorenbayi.com/nopofovj7ydn.pdfIn PDF document text
    • http://tinesemexogo.mygamesonline.org/self_determination_theory_deci_and_ryan_2008.pdfIn PDF document text
    • http://raffle.website/kumerwozgd.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/uifiiN6/48379264041.pdfIn PDF document text
    • https://cdn.sqhk.co/godanalumado/jeO9Cji/arena_stage_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/jowowibow/Mhjhfgf/mortal_kombat_xl_moves_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/Ahe8MKH/travis_greene_let_my_worship_rise_song_download.pdfIn PDF document text
    • http://rawiduti.medianewsonline.com/whirlpool_duet_dryer_troubleshooting_guide.pdfIn PDF document text
    • http://cashfree.store/41401407070pe9nt.pdfIn PDF document text
    • https://cdn.sqhk.co/fivobebetax/chhlgcZ/wixon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/sepixusosurapubuk.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/lelimudagofozojamovaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/220d0d8c-af92-4950-acb4-b2a5435c24bf/how_to_train_for_football_on_your_own.pdfIn PDF document text
    • http://nedizilunok.myartsonline.com/47598551036.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/the_road_cormac_mccarthy_short_summary.pdfIn PDF document text
    • http://wizigipixe.atwebpages.com/dagup.pdfIn PDF document text
    • http://kexomun.myartsonline.com/mawoluvigatebajameraluge.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/78741768221.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/wogitosejuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29392009-26b5-4d28-a6e3-04919ed25fcf/what_to_eat_for_muscle_gain_vegetarian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/facc8472-05e7-4b1e-a759-a2cc5b01e21f/php_html_to_library.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF379 5428 bytes
SHA-256: 45ce4a6dfddb4655fb07bdf2d2ee067aab063209c8f340fa4ab4cc02034d005e
font_01_sfnt_off000105f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F2 10584 bytes
SHA-256: 502be17af01b41eece681c969cbc3b24d16a5c253a55967b502c05f1dc0888b4

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