Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff795dd8fdf1b88b…

MALICIOUS

PDF

82.6 KB Created: 2021-03-20 01:37:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 361ee4b20bc22b6a9677c5388cb5d7db SHA-1: d619fef1142c1b9385f08bf4fd2c427defa25587 SHA-256: ff795dd8fdf1b88bfe5c9d411b6aa2a563912edb7ddc91028418f0f05ab8fc0a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many of which point to SEO-optimized content farms. One prominent URL, https://soxebez.ru/wix?keyword=ho+bieu+chanh, is identified as a high-risk redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/wix?keyword=ho+bieu+chanh PDF link annotation
    • https://s3.amazonaws.com/sazomo/gevamixiside.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/lurakuxexazawemijuwokovem.pdfIn PDF document text
    • http://hhizmet.com/guroripakipodusepiy8ul2.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/225081369.pdfIn PDF document text
    • http://siondez.ru/holt_life_science_textbookux5fp.pdfIn PDF document text
    • http://mobile-media.moscow/lobijunx5cj.pdfIn PDF document text
    • http://tuimag.ru/romeo_and_juliet_act_5_scene_1_and_2_questions_and_answersopri3.pdfIn PDF document text
    • http://praktika-ingenieur.com/60203050811garku.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/48896814112.pdfIn PDF document text
    • http://abouts.space/english_to_thai_alphabet_translation3yw9e.pdfIn PDF document text
    • http://fkpravo.ru/105433843611payd.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/hd_love_wallpapers_1080p_for_android_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/89142330959.pdfIn PDF document text
    • http://raisinsapp.pro/hp_officejet_pro_8500a_print_quality_problemsg78ol.pdfIn PDF document text
    • http://foselosen.sportsontheweb.net/migivolaliwitojeno.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vibupozikijebi.rf.gd/world_stock_markets_open_times.pdfIn PDF document text
    • http://bofetotazefonuv.epizy.com/83876041925.pdfIn PDF document text
    • https://c827806f-f9bf-4fd3-a4ce-e487c020fa79.filesusr.com/ugd/6fd45c_f6c368242e9c4a4eb94e075ba33ae131.pdf?index=trueIn PDF document text
    • http://levegukesiwus.rf.gd/regulation_of_carbohydrate_metabolism.pdfIn PDF document text
    • http://galexuduxegi.epizy.com/bumavog.pdfIn PDF document text
    • http://zilisidojaze.myartsonline.com/ritug.pdfIn PDF document text
    • https://db6a684c-bd73-4a61-997a-17040cc1d896.filesusr.com/ugd/bbbb20_b6a90c3662164e76a7764d807439c2b6.pdf?index=trueIn PDF document text
    • https://de99934f-f465-4d69-af5e-14f317c0a7c6.filesusr.com/ugd/4fea5c_3f18a6766d944893bb247d54b3f8200c.pdf?index=trueIn 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_off0000f9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BF 4684 bytes
SHA-256: 332129547e12984c9d934ffda490ec43b2507bc01f06e253ce78580faeb46a57
font_01_sfnt_off000109ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109AB 23160 bytes
SHA-256: bbfaed7d2bdd336b8c04f345a65b17bb5b66008ac8756c1b67352eab17b16e2e