Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd336832efeb5c1…

MALICIOUS

PDF

78.2 KB Created: 2021-01-22 22:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 39fcdf323a515bde002f27cde2dd3740 SHA-1: 9f2194cffbec3da812813f2e5904ab6e320ce394 SHA-256: dcd336832efeb5c180d4b81ecc78b830b2cbc3a482d13421010b00d9bd4634cb
184 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and contains multiple links to known malicious redirector infrastructure. The embedded links, such as 'https://traffine.ru/aws?utm_term=android+tv+box+vinabox+x10', are likely intended to lead users to phishing or malware download sites. The document body, though heavily corrupted, contains references to 'Android tv box vinabox x10', suggesting a lure for potentially unwanted software or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/aws?utm_term=android+tv+box+vinabox+x10 In PDF document text
    • https://site-1178372.mozfiles.com/files/1178372/91487938927.pdfIn PDF document text
    • https://site-1194807.mozfiles.com/files/1194807/frankoma_pottery_color_guide.pdfIn PDF document text
    • https://site-1167953.mozfiles.com/files/1167953/zombie_attack_java_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454055/normal_5fdeac0197f61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475727/normal_6009d1b08a2cc.pdfIn PDF document text
    • https://site-1172550.mozfiles.com/files/1172550/vr_horror_games_oculus_rift_s.pdfIn PDF document text
    • https://site-1171615.mozfiles.com/files/1171615/office_space_idle_profits_green_plans.pdfIn PDF document text
    • https://vukedezesul.weebly.com/uploads/1/3/0/7/130776134/9797008.pdfIn PDF document text
    • https://fovibera.weebly.com/uploads/1/3/5/3/135324383/b8bd8ba6.pdfIn PDF document text
    • https://site-1168007.mozfiles.com/files/1168007/dual_stick_fighting_2_player_mod_apk.pdfIn PDF document text
    • https://site-1176958.mozfiles.com/files/1176958/ditiwuw.pdfIn PDF document text
    • http://gopubewigofopa.iblogger.org/avid_media_composer_8._9_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mamisiz.rf.gd/botujonodugogeromero.pdfIn PDF document text
    • http://pidawuz.epizy.com/amelita_rae_libros_gratis.pdfIn PDF document text
    • http://sudimomovaw.epizy.com/48986009407.pdfIn PDF document text
    • http://luwunepozu.epizy.com/mafeperiravokewob.pdfIn PDF document text
    • http://pinamagowejut.epizy.com/92040685562.pdfIn PDF document text
    • http://pigasupozev.epizy.com/95790129567.pdfIn PDF document text
    • http://nefaped.epizy.com/87071053509.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_off0000e9db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DB 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000f419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF419 5060 bytes
SHA-256: 70fa62feb9008a7c7e37dbcc9d7d0adf2727a45faf6c4329fd56ba4e003207c0
font_02_sfnt_off0001056c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056C 10956 bytes
SHA-256: 9623133cd6523618e77bff5d7024a81aeee283ab6d9e0ef208fcfdd7909691ca

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