Malicious PDF — malware analysis report

Static analysis result for SHA-256 140f0d31f6638690…

MALICIOUS

PDF

77.9 KB Created: 2021-02-09 17:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d1f1804ac2aae00d7e69b049859bdecb SHA-1: 5c6e1294c17460c63afc48a8f6f41bbbc6011632 SHA-256: 140f0d31f6638690efe276afd2f54fbd3e7a6eb9a646698757dc5bdacaedf688
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains multiple embedded URLs, including 'https://jottigo.ru/wb?keyword=green%20label%20singapore%20pdf' and 'http://nikaold.site/41306496420g5tz0.pdf', which likely serve as lures to phishing or malware distribution sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests a pattern of using disposable hosting for malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/wb?keyword=green%20label%20singapore%20pdf PDF link annotation
    • http://nikaold.site/41306496420g5tz0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459325/normal_5ffcc6d854462.pdfIn PDF document text
    • http://tonagruz.ru/i_got_that_boom_boom_pow_cleannjdp5.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/hbjbgiq/96358301780.pdfIn PDF document text
    • https://cdn.sqhk.co/luginuwi/RxtNtgh/10936227405.pdfIn PDF document text
    • https://cdn.sqhk.co/mojesoje/l3LKoha/kuwalun.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/cbuPjeE/drift_max_world_drift_racing_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_601da1c12eada.pdfIn PDF document text
    • http://216tilford.com/butorigazumofimellng7g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5fc86eeccb671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453885/normal_600feffc51bc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474222/normal_60225409466d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503584/normal_601f3f42ed0c6.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/Q2Vgeha/barber_shop_near_me_black_hair.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443354/normal_5ff4898b12317.pdfIn PDF document text
    • http://repair-monokoles.ru/character_creator_3_full_crackmtx9w.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/dukexajuj/android_update_for_redmi_note_5_pro.pdfIn PDF document text
    • http://nidikofuwovi.rf.gd/sheet_metal_forming_process_slideshare.pdfIn PDF document text
    • http://kuronodufanox.epizy.com/wusetabojigetabowexagonom.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/50316168641.pdfIn PDF document text
    • http://muzoxed.rf.gd/65933022422.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/flags_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/faduv.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_off0000f45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45B 5380 bytes
SHA-256: 01d87d660c62d7fd2dd442ca2de105a1efd8fa7a6b8f3544b76bb13f99511be0
font_01_sfnt_off000106b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B0 10520 bytes
SHA-256: 3527522be8a42e1934cd55d93fe44be5d84d9be9d1390a2be11c649fc2728d7e

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