Malicious PDF — malware analysis report

Static analysis result for SHA-256 32135fb86d027be0…

MALICIOUS

PDF

76.3 KB Created: 2021-03-02 23:17:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e62ca2d639cb3380c429ee00273958f9 SHA-1: 02375612a33a4a16434eae29f8d61d8520b3eaa9 SHA-256: 32135fb86d027be0994cba778e4206fbe4eaea3f555f6269113f0fdff6079ac2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xezojetit.ru/award?keyword=hp+elitedesk+800+g1+mini+desktop+intel+core+i5-4590t PDF link annotation
    • http://vazutokidoxe.iblogger.org/hydraulic_accumulator_circuit.pdfIn PDF document text
    • http://xenuven.22web.org/33767724946.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fd318f320905.pdfIn PDF document text
    • https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/3505771.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/warrior_cats_name_generator_quotev.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/jands_vista_s3.pdfIn PDF document text
    • https://kaxemesotom.weebly.com/uploads/1/3/4/7/134732336/wegitaz_pujekojisumub_dagusilad.pdfIn PDF document text
    • http://jozarizotugi.22web.org/baby_girl_announcement_email_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zavinawotomuvef.epizy.com/59843263047.pdfIn PDF document text
    • http://vefodipox.myartsonline.com/what_was_the_point_of_the_iron_curtain.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/hip_hop_dance_music_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/97051422030.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/lovikuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/32869834069.pdfIn PDF document text
    • http://potufepevumu.rf.gd/34608002858.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_off0000dffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFB 5996 bytes
SHA-256: 92af76f65357a88306bf4e9f0566eae1dd0a554b39b794953578fdcd3f82bef1
font_01_sfnt_off0000f465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF465 14604 bytes
SHA-256: e910d79821b21e5f20a8132e83cbd6599af196d3de07354048c206d78fd644bf