Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9e45c5e4ea0a5a…

MALICIOUS

PDF

72.7 KB Created: 2021-02-19 08:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 52d9019bfcca9950fc3aadcb56c32df4 SHA-1: 0f63d0b4b4ed343dd89fa88bdf69338e47cb2ce2 SHA-256: fd9e45c5e4ea0a5a68e19cf81f7a7b80b3e88af3a108ea2cc86824da2478b4d8
196 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
  • 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://baarspo.ru/wix?keyword=crest+middle+school+schedule PDF link annotation
    • https://wufonujixu.weebly.com/uploads/1/3/4/3/134386315/05aef562.pdfIn PDF document text
    • https://poginatiru.weebly.com/uploads/1/3/0/8/130874277/buzedajuzoro.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/Nij2jd4/mr_spy_undercover_agent_mod_apk_unlimited_money.pdfIn PDF document text
    • https://lanudoda.weebly.com/uploads/1/3/2/3/132303217/8320500.pdfIn PDF document text
    • https://vasuwogi.weebly.com/uploads/1/3/4/0/134017955/kilesodifowuze-pijomigijiduri-gisanokavopo.pdfIn PDF document text
    • http://mini-cam1.club/871778537705hyc5.pdfIn PDF document text
    • https://lavivatum.weebly.com/uploads/1/3/1/4/131437335/58d5c0.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/ghFa8hd/30333843484.pdfIn PDF document text
    • http://kraftmann.su/infection_preventionist_nursewm4wa.pdfIn PDF document text
    • https://cdn.sqhk.co/budatumibowu/f3jdjjn/passcode_lock_screen_wallpapers.pdfIn PDF document text
    • https://cdn.sqhk.co/ratobomebal/ieUjhje/jesusagemazuvagunopifagu.pdfIn PDF document text
    • https://jakugogafezokev.weebly.com/uploads/1/3/1/4/131437362/8ff89fd.pdfIn PDF document text
    • https://tesegedoveveda.weebly.com/uploads/1/3/4/8/134891870/vibegejedidubixine.pdfIn PDF document text
    • https://kukatuvitakutir.weebly.com/uploads/1/3/4/6/134690336/4678532.pdfIn PDF document text
    • http://gayerkan.com/risaxumosonavod4ufag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fasudikek/the_missing_piece_meets_the_big_o.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/where_is_the_drain_hose_on_a_hoover_washing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/mujifolazumijubinubujigu.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/sidur.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_off0000e2fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FB 4876 bytes
SHA-256: a7a0b50ec1df1581181fc313fb0532523a575f2640ad44cac441e2ffe471867e
font_01_sfnt_off0000f35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35D 10160 bytes
SHA-256: 149528d6901d94b9b32a68df705951554138968bae2367c7c7e2d45d28257c42