Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32610d538b2c08b…

MALICIOUS

PDF

77.3 KB Created: 2021-03-24 22:00:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 76f037b0cbbc340ae8072d573ca0ed73 SHA-1: 5b245040182bc2a29bde1ab2b31ab3941ab76931 SHA-256: d32610d538b2c08b61f3d1d9efb5265f2f10d8e1b0060d915dbc63587644048e
176 Risk Score
Tags
free-cdn-ebook-manual-lure

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. It uses a QR-code lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://nipisod.ru/strik?utm_term=vizio+e70-c3+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5fd2413ca228b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368982/normal_601d90e033f60.pdfIn PDF document text
    • https://cdn.sqhk.co/repudodo/4Ekgjhe/qr_code_scanner_download_apk.pdfIn PDF document text
    • https://sumokexopusoval.weebly.com/uploads/1/3/1/3/131378975/aa1b175f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447647/normal_6003dc1097e61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377674/normal_5fc77644732a3.pdfIn PDF document text
    • https://nixixufusolawig.weebly.com/uploads/1/3/4/8/134882604/64a5bef5532.pdfIn PDF document text
    • https://duwaxitim.weebly.com/uploads/1/3/4/3/134312722/8180314.pdfIn PDF document text
    • https://cdn.sqhk.co/gepibilis/cPgcih3/shark_attack_movie_surfer.pdfIn PDF document text
    • http://in-arenas.com/nordictrack_c2200_belt_replacementqmbmh.pdfIn PDF document text
    • http://cosmeteca.com/pit_bike_motorcycles_for_sale98nd9.pdfIn PDF document text
    • https://likifovufuli.weebly.com/uploads/1/3/4/5/134588617/aa1bdd95b.pdfIn PDF document text
    • https://cdn.sqhk.co/mefivujosawo/cDywluY/minecraft_launcher_apk_softonic.pdfIn PDF document text
    • https://tuwebuliwarukor.weebly.com/uploads/1/3/5/4/135400964/gugaxik.pdfIn PDF document text
    • https://xobalodag.weebly.com/uploads/1/3/0/7/130739625/gamojonuri.pdfIn PDF document text
    • http://tronreserve.online/background_hd_blur_imagefjjr4.pdfIn PDF document text
    • https://komanogorolelew.weebly.com/uploads/1/3/1/3/131380356/8423347.pdfIn PDF document text
    • http://italia-doc.space/bluebeam_vu_for_androidaruex.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/fobupojowojon/porene.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/business_management_calicut_university_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/dale_earnhardt_jr_memorabilia_price_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/what_type_of_boots_do_marines_wear.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/ciaphas_cain_hero_of_the_imperium_download.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF1 4940 bytes
SHA-256: 205ad3529453bdcf506b7d02cd3a249826795c5a6598c98df948665d6f59cf5e
font_01_sfnt_off0000fff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF3 11216 bytes
SHA-256: b6abda1546f8517211d22e237de5d2916956f73be15606dc7acbfcef33c1f5ac

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