Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a00de5d5abacc97…

MALICIOUS

PDF

75.3 KB Created: 2021-03-05 05:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: ade0f4b8f2963199caff7c08572367ec SHA-1: 90beaecd6aba4bc647e5ba1b6ce3e5a0ca299ecf SHA-256: 3a00de5d5abacc9767af87cd86ee0303f1fc206f28ec19a073ae332aa6f4e418
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially corrupted, suggests a lure related to 'rental application california'. Numerous external URLs are embedded, with one specifically pointing to 'botokaw.ru', likely serving as a phishing or malware distribution endpoint. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further suggests a link farm designed to obscure malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=rental+application+california PDF link annotation
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/9d5f519c92b56.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/dubuvavogekexiwef.pdfIn PDF document text
    • https://cdn.sqhk.co/tarekekog/7IvienT/tigorojud.pdfIn PDF document text
    • https://cdn.sqhk.co/gasupewu/dShgNls/jobutebivovanunilijipag.pdfIn PDF document text
    • http://jisilasi.22web.org/paraxerabe.pdfIn PDF document text
    • http://passive-income.ru/monerafubifafo4h68s.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/31056855673.pdfIn PDF document text
    • https://cdn.sqhk.co/pipagalax/jhguxR5/mosenij.pdfIn PDF document text
    • http://begemotiks.fun/nukotodawananerunuwivenafuvwi.pdfIn PDF document text
    • https://vukuzimina.weebly.com/uploads/1/3/4/1/134109202/6346943.pdfIn PDF document text
    • http://italywow.pro/76482000189ikgoe.pdfIn PDF document text
    • http://apkweb.net/new_holland_t8010_t8020_t8030_t8040_tractor_service_manualbgdq5.pdfIn PDF document text
    • https://cdn.sqhk.co/vexavudakepa/VhaZCih/alchemic_phone_alchemy_in_your_pocket.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/erp4Wgg/subujufifabatejivomev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gugamofizuxeg.epizy.com/brioche_roll_nutrition_information.pdfIn PDF document text
    • http://semerobaragizeg.epizy.com/nisab.pdfIn PDF document text
    • http://zegiwewezenaro.myartsonline.com/what_does_the_raven_mean_by_nevermore.pdfIn PDF document text
    • http://jowokepo.atwebpages.com/mazav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8770b8fc-1761-4af9-bce3-ef0e495d9f90/what_is_a_wake_after_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/408df621-2a8a-4888-b959-a5354f50540f/64249286430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5108022-c4cc-41fd-b465-3bbc955f3917/how_to_start_a_power_air_fryer_elite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02950821-01b9-4fd4-8ee3-16d8244c64ea/what_does_the_bible_say_about_time_in_heaven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8624cdc-4ce9-4612-bfb2-7687eac70fe1/93603016839.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/casio_ct_x700_price_in_pakistan.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_off0000ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAC 4840 bytes
SHA-256: 8e5f7581fe9d1f21be03f70022bc5e9ae76fbd31e2a39befde666bb04d0b9263
font_01_sfnt_off0000fd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD39 10136 bytes
SHA-256: b864658d642a70575653251dbfd69f71816172215679f2541cf55153e8e28540

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