Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1159da664d00103…

MALICIOUS

PDF

85.1 KB Created: 2021-03-08 14:25:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 342dc1f483a2cd9dcf8ebf8899d07d6a SHA-1: 686ed62dfcf3f455f56db84a9a5dfa7a9deb744e SHA-256: e1159da664d00103412e0401f6b3edf9e4c3d742cfe72a6e7b19bbe967ae02a9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 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.
  • 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://midufefew.ru/wix?keyword=obligate+aerobe+definition+biology PDF link annotation
    • https://cdn.sqhk.co/retobumoki/gjNEMjb/hitman_reborn_tagalog_dubbed.pdfIn PDF document text
    • http://gukevipagopu.mywebcommunity.org/54351576367.pdfIn PDF document text
    • https://tarezusubem.weebly.com/uploads/1/3/5/3/135386237/rilinixefesug.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/nkfhfnv/king_of_thieves_promo_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuruvew/Sihognk/top_marketing_jobs_in_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/CHgjig7/titan_quest_ps4_gameplay_german.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/jghAghE/65014495656.pdfIn PDF document text
    • https://sujarusokebukok.weebly.com/uploads/1/3/1/4/131437349/fesepumemijaxopidu.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://dd3528e8-ded0-4753-843e-0d3cb9f542e7.filesusr.com/ugd/4d6844_5cd927dde1cd4abf89ec54d53aeb4ddf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/world_war_z_2_trailer_deutsch.pdfIn PDF document text
    • http://pisonepegosa.myartsonline.com/59866756632.pdfIn PDF document text
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_e95a4c195b4c4e4da3a068a5aa06c5bb.pdf?index=trueIn PDF document text
    • https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_9fc930ca639a422e81c70dbd7440053e.pdf?index=trueIn PDF document text
    • https://c01188fd-d8af-4b86-846b-090f7ecd58d8.filesusr.com/ugd/9058e5_ee5e3cd6efce485e8952337dad5579cd.pdf?index=trueIn PDF document text
    • https://6f81cef9-66a2-447d-9e1d-4c0427ef15c5.filesusr.com/ugd/4d935e_a887905cd9b1425e82bd68ff64c64142.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosawef/2814870826.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/sum_of_arithmetic_sequence_worksheet_with_answers.pdfIn PDF document text
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_4977d51944af4bd6926d21104f20d1db.pdf?index=trueIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_b0076f44d5414a429c4c5c7d862c09e1.pdf?index=trueIn PDF document text
    • http://jozilaro.atwebpages.com/dopizajizog.pdfIn PDF document text
    • https://61249681-e2d1-4375-841a-b3723294d79c.filesusr.com/ugd/3d514e_1235dd3da5c6474b9ab1c3c43caea6be.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/xuxekadem.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_off000101c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C6 4956 bytes
SHA-256: e56f2922a6d9337179fdedb9b975f5a88373ac76d5a971be994109a6779ac139
font_01_sfnt_off000112b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B0 10608 bytes
SHA-256: 4f93b55ea179d76c23230eb415e69812a415611a8e075ad9c60c05ae3da4c33e
font_02_sfnt_off00013701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13701 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176