Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7f0d4b443f133b5…

MALICIOUS

PDF

103.9 KB Created: 2021-06-01 02:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0dae31be2d755d7a50cc00f687d4ee8a SHA-1: c8750329ea26bd1b08386931bb4b27b3f42b014c SHA-256: b7f0d4b443f133b55c2393973aa15b58ca8783f3a7d4269916224f3b4208e24b
184 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, contains references to downloading movies, suggesting a lure for pirated content. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5942

Heuristics 5

  • 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.
  • 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
  • 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://archism.ru/pbw?utm_term=twilight+saga+2008+tamil+dubbed+movie+download+tamilrockers PDF link annotation
    • https://lelobetiladafan.weebly.com/uploads/1/3/4/4/134497055/206410.pdfIn PDF document text
    • https://luzidasagozoro.weebly.com/uploads/1/3/4/3/134319964/zojusudali.pdfIn PDF document text
    • https://wejefagujevixow.weebly.com/uploads/1/3/4/4/134472609/vejitomi.pdfIn PDF document text
    • https://bojemoravegoda.weebly.com/uploads/1/3/6/0/136095552/fopexif_mogosopojeguvop.pdfIn PDF document text
    • https://golewobewawir.weebly.com/uploads/1/3/4/3/134350879/8455417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_601786a82f5bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470024/normal_60340908e5a04.pdfIn PDF document text
    • https://xubivolimoba.weebly.com/uploads/1/3/0/7/130740090/zoxituf-nurivipanoner-jatowa.pdfIn PDF document text
    • https://xulomonixibeneg.weebly.com/uploads/1/3/1/4/131455416/wokizikawigifi_leboxagefusuku.pdfIn PDF document text
    • https://noxomawap.weebly.com/uploads/1/3/5/9/135981563/8820155.pdfIn PDF document text
    • https://denogowozule.weebly.com/uploads/1/3/5/3/135326247/kumudizo-makudupi-fasuluvo.pdfIn PDF document text
    • https://takesefitetipal.weebly.com/uploads/1/3/2/6/132682925/242653.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3383aee-7001-49e4-ac7a-b935afcc33e6/81428512832.pdfIn PDF document text
    • http://nosiravuga.pbworks.com/f/gijedezofifip.pdfIn PDF document text
    • http://pezeliv.pbworks.com/f/mckenzie_technique_for_herniated_disc.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/w/file/fetch/144432159/oxford_new_science_in_everyday_life_class_8_download.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/w/file/fetch/144433578/deviation_of_beer_lambert_law.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd700d2-5484-4169-b7b8-c473641246d1/ross_carbonite_solo_alpha_key.pdfIn PDF document text
    • http://lakebimutep.pbworks.com/w/file/fetch/144427338/how_to_make_a_shortcut_run_as_administrator.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/begepojiwiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2aae3f-b290-43d3-9c04-5bbb1b6cbf1e/toro_518_zr_oil_change.pdfIn PDF document text
    • http://poforezufovu.pbworks.com/w/file/fetch/144432132/dawuporesawadaromeleka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1151fa8e-8f74-4179-9a24-a585ae55d01b/kutobexuwiworitina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc6d90bf-e1ab-40d0-abe4-b2f0788b2feb/how_to_set_up_directv_receiver.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000141bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141BD 6128 bytes
SHA-256: 7d244a822a1692c0dd49cc235ee46c74562cade57d04b1b12084692562cbd498
font_01_sfnt_off00015674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15674 2404 bytes
SHA-256: 3b5a3366c7b1610b3ab2bbd16295e6e99ca83935ced617ae9de5a0e6de1d5056
font_02_sfnt_off000160b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160B9 11944 bytes
SHA-256: 372054a27ba0768e1720c42c9feb6de9417ad05c37a601d60983331a6a5b2d5f
font_03_sfnt_off0001899a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1899A 16432 bytes
SHA-256: 57b8ad15831c97a78e185df47e75c04563bb23374799d8befb43989c92fa0f81