Malicious PDF — malware analysis report

Static analysis result for SHA-256 486b3045e494c32c…

MALICIOUS

PDF

77.2 KB Created: 2021-03-14 13:27:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: cd86d07844489964c14b81a8a1bb754d SHA-1: b18344421a9a30c5e378a1bfd39a57970c785e4c SHA-256: 486b3045e494c32cf736bcd6faa66ab2242e44a53240b54642bfb8fd5f37b162
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to potentially malicious domains, and is flagged by ClamAV as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a recipe search, designed to trick users into clicking on embedded links. The presence of multiple PDF_SEO_LINK_FARM heuristics indicates a large number of outbound links, likely for SEO manipulation or malware distribution.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=the+cozy+apron+italian+drunken+noodles PDF link annotation
    • https://cdn.sqhk.co/nowazedadara/aor1sij/50697198743.pdfIn PDF document text
    • http://vekuzebis.22web.org/gavuwatuzevituxisapavin.pdfIn PDF document text
    • https://cdn.sqhk.co/xekutenupi/iiUjbgc/white_stripes_greatest_hits_vault.pdfIn PDF document text
    • https://rogupogadagome.weebly.com/uploads/1/3/1/3/131398605/7422734.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/cig5Age/galaxy_theatres_tucson.pdfIn PDF document text
    • https://tipuzinugex.weebly.com/uploads/1/3/2/6/132682040/fa6ac3b2c.pdfIn PDF document text
    • https://bazodezivif.weebly.com/uploads/1/3/6/0/136088162/fagamuvoluxaxesid.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/fihidjP/new_planet_fitness_location_in_houston.pdfIn PDF document text
    • https://cdn.sqhk.co/najuvotuwoz/7jbgeU7/free_robux_bricker_download.pdfIn PDF document text
    • https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/sotisigatavesif.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/N3IZhed/conmebol_world_cup_qualifiers_2022_tv_rights.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raseloxezonavo.epizy.com/nupexipopejaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/movajowakidiz.pdfIn PDF document text
    • http://wuparol.epizy.com/xabulog.pdfIn PDF document text
    • http://dinikuwaduvo.epizy.com/propresenter_6_supported_video_formats.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/lifawaxululazesizapetexik.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/xiloxoluki.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/julius_caesar_play_summary_act_2.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/41381533882.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/libro_el_cerebro_autista.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/63300167566.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/13507343555.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/44949687264.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_off0000ee7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7D 5324 bytes
SHA-256: 84c3887bba4d4a1782da1942761f5de9d0e5f3e4fddea1f7c13777b42d5e6e98
font_01_sfnt_off000100a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A1 11420 bytes
SHA-256: 42a9e22bdc6c2e33323fe9c60527f880350d7f7f4af251becf0630963904285a

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