Malicious PDF — malware analysis report

Static analysis result for SHA-256 49edfdf33baeec19…

MALICIOUS

PDF

89.7 KB Created: 2021-04-04 15:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5c8d59d32792d8833e04814ea5eda287 SHA-1: ca1c858352eec4ea9a6ecc7efe3854798a1b118b SHA-256: 49edfdf33baeec1923881605efe2d17dbbb90bf7dae9c40bd7bd70651a49059b
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to SEO-optimized PDF files, suggesting a link farm or phishing lure. The primary URL, 'https://gimoguvi.ru/wix?keyword=whirlpool+wall+oven+manual+unlock', is presented as a manual but likely leads to a malicious download or phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://gimoguvi.ru/wix?keyword=whirlpool+wall+oven+manual+unlock PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495244/normal_6024ce8eacb01.pdfIn PDF document text
    • http://sdl-trade.com/biladumofanufopoxozifipakwyf95.pdfIn PDF document text
    • http://tonukavugu.mygamesonline.org/treatment_of_portal_hypertension.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449779/normal_60164f4d3b390.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376357/normal_5fc5af418f8a7.pdfIn PDF document text
    • http://arbitestpark.xyz/what_jobs_can_you_do_with_a_public_relations_degree9asbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481055/normal_5fe875717702c.pdfIn PDF document text
    • http://dipazekonowa.mypressonline.com/how_to_fight_a_judgement_against_me_in_texas.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/can_you_donate_clothes_to_homeless_sheltersfrmqm.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/engineering_drawing_boxed_dimension.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/vavabi/icom_718_receiver_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/download_warcraft_2_battle.net_edition_full_game.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/89739212270.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/22482349468.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/lozotowadikexazananevok.pdfIn PDF document text
    • https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_eacb0d76aab849c8b760efe68bb19f69.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lusabifef/meganagijalusete.pdfIn PDF document text
    • https://c9977776-9e37-4432-9eae-e541147807da.filesusr.com/ugd/bb6cc6_9ce990cf901842cd8907d9d3bfeb1b4c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/fishing_report_near_me_today.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/3679027769.pdfIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_60e94d3e88fc4681873e96fda46dc621.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sazixipame/13717334407.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/spectra_s1_breast_pump_tote.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A9 2952 bytes
SHA-256: 6cb1d0bd15748b161a2ded9cfcfbf1befbc9d2e430301dcc2c73d38ab589abee
font_01_sfnt_off00012233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12233 5224 bytes
SHA-256: 7344dfffb2def3d7068b8fbef5ef68d8dc83a8a0cb435604d7fb20e8e4d1d1d6
font_02_sfnt_off000133e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E9 10764 bytes
SHA-256: 4cdaab4cc95b3e3d0b4ec7cc40b962027efc3f485c412999076d781b7e40b1ed