Malicious PDF — malware analysis report

Static analysis result for SHA-256 7062caa422708078…

MALICIOUS

PDF

83.8 KB Created: 2021-05-25 05:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c9a1aa20f8276007c388ae41accdfc95 SHA-1: 84e302bb35ff8c36913912452a86e60779bf2cad SHA-256: 7062caa422708078646a8f18e3ed7ddcfeb969294c221ff9833a438cf2323c72
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/strik?utm_term=licensed+email+and+registration+code+for+imyfone+d-back PDF link annotation
    • https://fubareno.weebly.com/uploads/1/3/1/4/131482864/5444052.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/babatezez_getipapek_renaxum_tukufejivube.pdfIn PDF document text
    • https://xikoroto.weebly.com/uploads/1/3/4/3/134338579/kanadorel.pdfIn PDF document text
    • https://jajajijonox.weebly.com/uploads/1/3/1/4/131453539/319984bff19.pdfIn PDF document text
    • https://felomadexibeb.weebly.com/uploads/1/3/4/6/134687620/dugogumiluvu-wuwesaduzuvix-kasojaxe-nemegipafetugan.pdfIn PDF document text
    • https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/zazojosow.pdfIn PDF document text
    • https://nifusesoporiw.weebly.com/uploads/1/3/5/3/135309858/1105827.pdfIn PDF document text
    • https://mugapasuxow.weebly.com/uploads/1/3/1/4/131437627/gegivojil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/69089420254.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/zuzavexapivosigizeve.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/nesipoduxejikuwotaw.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/90545992554.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/26950203835.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/bible_niv_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/timojonita.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/what_is_the_learn_button_on_liftmaster_keypad.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/sijupusaririlawexew.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/2770755763.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/luxeg.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/14152759025.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/generalized_anxiety_disorder_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/kill_a_watt_ez.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/vijaragefemafimurilodu.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/jack_reacher_full_movie_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/wabimumawomolomifili.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_off0000faaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAA 5408 bytes
SHA-256: 0de4fda761463e50f6a3a240c1f47be46fdb6aa8ac9ba6f5f4dc4eea38cca489
font_01_sfnt_off00010cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF7 11140 bytes
SHA-256: 0241887d1fb257274e81b55726f84646c0dfacc1d04cb508f82aad5f5e158e22
font_02_sfnt_off0001331f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1331F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71