Malicious PDF — malware analysis report

Static analysis result for SHA-256 94dd452da5369cdb…

MALICIOUS

PDF

79.0 KB Created: 2021-04-06 15:16:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 26e8fcf78c3dbb9bbcbe3e3fb6063319 SHA-1: a2a93fff1930b04344707b13ae4eeb00774e3635 SHA-256: 94dd452da5369cdb2b46f21c58ebec2a8f6ed5d9ce4ac70bfa9c3f6933b4c48a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or distributing malware. The heuristic PDF_SEO_LINK_FARM indicates a large number of links, and one of the primary URLs points to a site offering 'free background checks', a typical lure. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://fokemale.ru/wix?keyword=free+background+check+online+no+credit+card+required PDF link annotation
    • http://monongzhlh.space/utilitech_propane_heater_parts8ni7g.pdfIn PDF document text
    • https://folejate.weebly.com/uploads/1/3/4/9/134902611/tejev-tebavomuzakor-sejus.pdfIn PDF document text
    • https://goponubinolofuv.weebly.com/uploads/1/3/4/6/134695307/8525524.pdfIn PDF document text
    • http://ttttrrrr.space/how_to_give_armor_stands_armsz6sda.pdfIn PDF document text
    • https://midejewafefo.weebly.com/uploads/1/3/4/0/134000268/8dc08.pdfIn PDF document text
    • http://edapog.online/kekopaveroagv7g.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://uploads.strikinglycdn.com/files/e6bad65d-aaeb-4839-b7ec-7f63ed136db4/trigonometry_questions_for_class_10_icse_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/chocapic13_s_shaders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e63274b4-ba8b-4b2b-9d54-1fb80c43dca0/vivezejoniwat.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/nuclear_decay_chain_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/45293654270.pdfIn PDF document text
    • https://a49aa754-465e-4bbd-924e-b3d0e7b66bd4.filesusr.com/ugd/81d6a4_a187c00e6a6449abbace92467fc2ac00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/descargar_acmarket_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/ragnarok_m_eternal_love_blacksmith_skill_guide.pdfIn PDF document text
    • https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_53872a9ac14b4d219aaf0b65aa2abde2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/is_recaro_the_best_car_seat.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/cs_energy_limited_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e415ea3b-112f-41ae-afbc-807ec33c2841/melabafe.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/jasidonevodapebalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53532195-aced-491d-973a-2fa5078003ed/advantium_120_parts_list.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/how_to_connect_stealth_700_to_xbox_one.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_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 5188 bytes
SHA-256: 41b9e445430a62aac252ec14bbfe153e44c212e1146991417fa70420b6f272bf
font_01_sfnt_off0000fbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDE 10488 bytes
SHA-256: f9daef818b6fb2b0c1549361f8d98a0df56c75e71428a22a003cbc70b569e24a
font_02_sfnt_off00011fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FBD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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