Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e9251ca3512240…

MALICIOUS

PDF

79.8 KB Created: 2021-03-25 12:27:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1fafe8d29b291fab3bda23d64e662717 SHA-1: bde7369c4e8059fbbe5e9b7defc26008c88b87c6 SHA-256: d7e9251ca3512240a189b3a3e1d6428c3d01a695610d0e18a554851d0b19f4a4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://fokemale.ru/strik?utm_term=workout+with+dumbbells+at+home+app PDF link annotation
    • http://fijexojor.getenjoyment.net/gizulifofomubipu.pdfIn PDF document text
    • http://iuts.space/82356204990zxr88.pdfIn PDF document text
    • http://pivolirarorip.mypressonline.com/5268778411.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/IqLrUjb/dojokitujiwasek.pdfIn PDF document text
    • https://xanuzejo.weebly.com/uploads/1/3/1/6/131637194/fuveritefeg.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/5ibLvhh/game_screen_recorder_android_4._4._2.pdfIn PDF document text
    • http://itanah.space/lbc_5._programa_de_avenidajfxjs.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/contribution_of_peter_f_drucker_in_management.pdfIn PDF document text
    • https://zabemogir.weebly.com/uploads/1/3/4/0/134016966/1771289.pdfIn PDF document text
    • http://liketime.fun/data_manipulation_with_r_spectoro0oyj.pdfIn PDF document text
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/1d15993c6306.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/ibDigie/lululemon_key_leader_salary_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/CeW8Yie/rimidozilitimonofitiga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/18924eca-73f0-4029-9a57-ea4ac5e4e7c1/pukoxux.pdfIn PDF document text
    • https://c779a0a5-5a96-4308-8c37-720837e0bdd2.filesusr.com/ugd/4f1d02_4be9eca9f09b4a2faf6b09a206e4c39c.pdf?index=trueIn PDF document text
    • https://56f9ebfc-1b58-4ccd-90b9-24793863e956.filesusr.com/ugd/0f3536_df04e2bd8b194d35be34949ea2dbdeb0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2904c0ec-0aca-4bbe-8f61-694c2fa89e50/how_old_is_kaz_in_six_of_crows.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f995ceb-6ebb-4ff5-b401-c38adc351d46/best_deck_mtg_arena_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/769592bb-f39f-4f9c-9085-989fd7709783/kofijog.pdfIn PDF document text
    • https://07bd7893-a6ec-44d5-90fe-c719e602c0bd.filesusr.com/ugd/aafaff_a654447d23b842b4820160efc137ef09.pdf?index=trueIn 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_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 5508 bytes
SHA-256: 629aa4e15a50e4b82c49f3fea350c6a3c3327e96c3454eeb542b552f4a57bb96
font_01_sfnt_off00010b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B96 11180 bytes
SHA-256: 7d588de72c2b2efff0e95353453ebaa84ca86eac6f34ef72ee3f3e0780bb900b

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