Malicious PDF — malware analysis report

Static analysis result for SHA-256 737436e98ca20815…

MALICIOUS

PDF

74.3 KB Created: 2021-02-25 00:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fea5c94b3abf2c91e07d93586596fa17 SHA-1: 7663cc44c9fb76c9233a9fd99de8adde344463df SHA-256: 737436e98ca208155033efecf8a2b1b31b53bd50c613d38f4bae95f89cc2c280
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=why+does+my+maytag+dryer+squeal In PDF document text
    • https://nusuxoxoli.weebly.com/uploads/1/3/2/7/132710665/tagosorik_wagejugibetebu_satuniganas_vafenanaxodoz.pdfIn PDF document text
    • https://nofawukamo.weebly.com/uploads/1/3/5/3/135347109/nenuropejur_sadutikuvu_sexetoxoti_zivigunofuj.pdfIn PDF document text
    • https://pejadalat.weebly.com/uploads/1/3/0/7/130775017/988c56f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_603427c701076.pdfIn PDF document text
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/raroxogeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_60204c02a7716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_602098ca3a5de.pdfIn PDF document text
    • https://cdn.sqhk.co/romafime/ioTL8gD/warbirds_world_war_ii_combat_aviation_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jizuwugi.rf.gd/65448896371.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/63540203599.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/75412746196.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/49087074747.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/helix_waltz_dress_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/vokenujipizinokedavuviki.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/12607481494.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_off0000e594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE594 5480 bytes
SHA-256: 5830aa78d12d64eedcdad11c3ae083473dd219608fad39571fce6e3e32bb6317
font_01_sfnt_off0000f814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF814 10624 bytes
SHA-256: 6cc0fd2cf5a30686ff735b8709bde3a9c0b584e3247016a3ab7ec4d82ba163e2

Open this report in the interactive analyzer, or submit your own file for analysis.