Malicious PDF — malware analysis report

Static analysis result for SHA-256 16dd890a369a8eab…

MALICIOUS

PDF

141.7 KB Created: 2021-01-24 10:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 979d9e68fd77ec2d6efca2de8d84fb8e SHA-1: c56a02a4945ecb89a68a37ac9da0d306264cbd9a SHA-256: 16dd890a369a8eaba74a6036cb71c6baa06194315a17929fa22d04b644fe2293
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains a large number of embedded external links, characteristic of a link farm or phishing attempt, with one notable URL being https://traffnew.ru/aws?utm_term=broken+movie+parent+guide. The document body, though heavily obfuscated, suggests a lure related to a "broken movie parent guide". No scripts were extracted, but the PDF structure itself facilitates the redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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://traffnew.ru/aws?utm_term=broken+movie+parent+guide PDF link annotation
    • http://damomemisogadex.iblogger.org/gulera.pdfIn PDF document text
    • https://daxajofu.weebly.com/uploads/1/3/0/7/130740026/e2152.pdfIn PDF document text
    • https://tosoremekik.weebly.com/uploads/1/3/4/7/134771766/revejamevupaga-gonebazo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469375/normal_5feb5c9409b8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449187/normal_5ff12a0b1e62e.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/6115105.pdfIn PDF document text
    • http://fuwenosod.iblogger.org/pure_apk_install_portable.pdfIn PDF document text
    • https://vidafipi.weebly.com/uploads/1/3/1/6/131636743/fajemakufexuxine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sekovukubetib.epizy.com/cash_passport_application_form_nz.pdfIn PDF document text
    • http://bajivuselome.epizy.com/rogukabukifajo.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/non_proportional_relationship_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/tapekagotef.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/noperukigoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/android_emulator_for_windows_7_memu.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/totujunotazizilovuzuta.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/av_player_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/fish_coloring_sheets_for_preschool.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/29555233001.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/booter_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/microsoft_office_2016_setup_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/automated_portable_hammering_machine_report.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/wamakupeguxukedofewi.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_off0001f236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F236 5244 bytes
SHA-256: 68cf3b8a59dbe8d3eaea5de0761ce805cb4154b1691678eb82831b682f3c9d47
font_01_sfnt_off000203ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x203FF 11184 bytes
SHA-256: 037c219d7f977fff941a32432836129d0cca73a11dd84ad984330aaad5958bed

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