Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af03b0570fd5b01…

MALICIOUS

PDF

78.3 KB Created: 2021-03-20 05:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cc4a76f75b28c5b8470ba788401d5474 SHA-1: 18af00a1d66b2a41ae119e5606965143e560aa8a SHA-256: 2af03b0570fd5b015aaff575d7b4dbfb815cad18b3d2125c1bc803e3446790bc
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 0.9993

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://ponafet.ru/wix?keyword=mario+kart+ds+action+replay+codes+rob PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460066/normal_5ff337cfa94ec.pdfIn PDF document text
    • https://mifurujuxix.weebly.com/uploads/1/3/3/9/133997148/xotokumusa.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/65073551548.pdfIn PDF document text
    • https://sibevuguz.weebly.com/uploads/1/3/4/8/134859718/1598205.pdfIn PDF document text
    • https://tirotirow.weebly.com/uploads/1/3/1/3/131380420/da79ad1226a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367947/normal_6004c71d7fa7a.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/wuxeneriz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443810/normal_604baee42ac8f.pdfIn PDF document text
    • https://tijirurilulade.weebly.com/uploads/1/3/4/3/134312421/c4272085.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/lojubudutizipowanumi.pdfIn PDF document text
    • http://dapunajav.22web.org/30390909988.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/d40f9191-034e-4b35-b0be-2d9defb4dd39/34856517119.pdfIn PDF document text
    • http://mawigugu.rf.gd/online_marketing_executive_interview_questions_and_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1cb4086-e3f6-44f4-8dcc-4371e776b37d/best_codes_for_anime_fighting_simulator_2020.pdfIn PDF document text
    • http://tofekerotireg.rf.gd/rog_aura_sync.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74eadcc0-9cbf-4590-8168-b06eb49523bf/top_200_drugs_brand_generic_list_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/informatica_mdm_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/91685144065.pdfIn PDF document text
    • http://suwetiwojiza.rf.gd/kijowidosaritutagat.pdfIn PDF document text
    • http://gojaxuga.epizy.com/75682935589.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/911_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/vidmate_old_version_free_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/73703912928.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_off0000f562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF562 5380 bytes
SHA-256: dafbfe356c26e1b993c7455b3df73c7a37c95d677f2aeceb3d11ca78c9a6ce4b
font_01_sfnt_off000107cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CC 10740 bytes
SHA-256: 6cdbce05efb6d914496d9a2849459dedda8076dfb504f90648d242e0ebfc923b

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