Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc34c850bbef2da7…

MALICIOUS

PDF

83.4 KB Created: 2021-03-30 06:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 391a9a8929b5cd0e23befcbd51d1b9a2 SHA-1: 90b388d6e8e08bc91da7e4c62f637fb0c1a2980a SHA-256: cc34c850bbef2da71c797db958b16b3163339c7dbed13b097cad1b4cbe2521a1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9996

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 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://fokemale.ru/123?utm_term=latest+christmas+songs+telugu PDF link annotation
    • http://titanof-filtr.ru/wugafisafilovirokus5bg2.pdfIn PDF document text
    • https://cdn.sqhk.co/pixukinoma/ghjbBXz/nojipeb.pdfIn PDF document text
    • http://idealslimitaly.site/1818952289883m7m.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://fivabigenarewo.22web.org/can_you_buy_hotels_without_houses_in_monopoly.pdfIn PDF document text
    • https://cdn.sqhk.co/gagobuniponi/9HoijAt/dune_1984_rotten_tomatoes.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/2jgz2id/13332042760.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jDJl8jj/3549423061.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/OaKEibP/11822696328.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/ojcshcB/dead_island_riptide_fury_weapon_glitch.pdfIn PDF document text
    • https://cdn.sqhk.co/xonoguduzob/7shg9Mn/operations_management_is_applicable_chegg.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/bI2gijh/name_generator_pubg_lite.pdfIn PDF document text
    • http://chunyoo.com/lubupepijitofexixoguhzpqi.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/qgg5ifD/70753913968.pdfIn PDF document text
    • https://cdn.sqhk.co/sarokuneti/HNgiIih/49761522910.pdfIn PDF document text
    • http://rukozhop-guide.com/what_perfume_smells_like_beautifullweoe.pdfIn PDF document text
    • https://cdn.sqhk.co/siboxowimu/eFMSJY6/whatsapp_messenger_download_for_windows_7_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/lodikorep/a0siggj/tinukafotezudupuxiruva.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/chfmgck/azara_vape_rice_lake_wisconsin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vonubopoz.rf.gd/kia_cerato_2013_manual.pdfIn PDF document text
    • http://milodip.epizy.com/teluzekuvogujabezudoraraj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19A 5156 bytes
SHA-256: 61d81e10253efec2fea53936a9f1bdf77c14a3a71e3bf3505ddc1ef43386b0b6
font_01_sfnt_off000102f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F9 10948 bytes
SHA-256: 5782a2f508c75ad7226cc3483e0ea42032881ce6143ee30952add00fcfa06f34
font_02_sfnt_off00012869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12869 16312 bytes
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1

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