Malicious PDF — malware analysis report

Static analysis result for SHA-256 894a99bec2cff527…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 00:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e270b82b48e3109867a6f23a3ec44d68 SHA-1: c2fbcc9d3565a18a01478e856316594edd77777a SHA-256: 894a99bec2cff527eb233b4c08a7d11ca5c96a285d9ef492fe86f6e47bc8c353
126 Risk Score

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://maypoin.ru/wix?keyword=impulsive+force+model+worksheet+3+conservation+of+momentum+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384652/normal_600cf4fae3d62.pdfIn PDF document text
    • http://all-gopro.com/91014983780rfp8n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5fdc40f6066c2.pdfIn PDF document text
    • http://healsmall.space/xetegazuzanaripiwapuf80vkl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_5fc69edfceb95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_600b0aeb0b016.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445118/normal_5fda424ba9374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529281/normal_5fee2defab1bb.pdfIn PDF document text
    • http://reduslim-ordina.site/vcenter_server_appliance_6._7_u30qagx.pdfIn PDF document text
    • http://educationonline.website/94554588111cogl4.pdfIn PDF document text
    • https://vuwezamubom.weebly.com/uploads/1/3/0/8/130814902/fuvub_jikekodotut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446380/normal_60082cff2aa6c.pdfIn PDF document text
    • https://rupusuji.weebly.com/uploads/1/3/4/8/134878943/darobaketat.pdfIn PDF document text
    • http://aicberg.net/japanese_alphabet_letters_a-_z_englishjmxcu.pdfIn PDF document text
    • https://zoguripan.weebly.com/uploads/1/3/1/0/131070442/1656390.pdfIn PDF document text
    • http://floradoma.net/fivetimoxopk9et.pdfIn PDF document text
    • https://sumajodezidozi.weebly.com/uploads/1/3/3/9/133997227/panagoz_sunufixenu_xozeda_milofipejibu.pdfIn PDF document text
    • http://espaceabonnes.com/sonic_oc_sprite_sheetqkto5.pdfIn PDF document text
    • https://pukibasobudez.weebly.com/uploads/1/3/1/3/131379944/raziditi.pdfIn PDF document text
    • https://vakupakofusiwu.weebly.com/uploads/1/3/5/3/135399484/0f3db6.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/suvikegezabemi.pdfIn PDF document text
    • http://fruit-citrus.space/eliphas_levi_deutschkbm5y.pdfIn PDF document text
    • http://aycotoro6.xyz/vedetisexemutam8bj1d.pdfIn PDF document text
    • https://fikuvigobe.weebly.com/uploads/1/3/4/5/134582673/81bb964827ea15b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACB 5712 bytes
SHA-256: 93d48501d89fb77438ffbef47d074d337ddc218feeb7de773c217542f8cc036a
font_01_sfnt_off0000ee28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE28 10116 bytes
SHA-256: 9c79094a20ff84b3e76f2a0566d7f6a2f789bf0e75c7c75dfef567898e1346a1

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