Malicious PDF — malware analysis report

Static analysis result for SHA-256 12069f3f28f0d4ad…

MALICIOUS

PDF

79.5 KB Created: 2021-05-24 23:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed151febbe134e3ff8961d19c8f90a1a SHA-1: 7132acc38332c8ee47cd69de3c27411abb9c34d3 SHA-256: 12069f3f28f0d4add41d805e0642cc32080a886692715af6f9c8c45accfa560c
164 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to benign-looking PDFs, but one primary malicious URL is present. The heuristic 'PDF_SEO_LINK_FARM' suggests the document is designed to generate traffic or distribute content through a link farm, with the primary malicious URL being `https://fokemale.ru/strik?utm_term=boboiboy+the+movie+2+full+movie+download+720p`. The presence of a 'download button' lure further supports a phishing or malicious download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=boboiboy+the+movie+2+full+movie+download+720p
    • https://cdn-cms.f-static.net/uploads/4414358/normal_5fd76c2a9c1c7.pdf
    • https://radogatibemif.weebly.com/uploads/1/3/2/8/132815767/ba3f34f.pdf
    • https://fefumuvujudadi.weebly.com/uploads/1/3/1/6/131606087/gadax.pdf
    • https://tidijutaxidekoz.weebly.com/uploads/1/3/4/5/134589823/zeparazujumi_vivovagugap.pdf
    • https://cdn-cms.f-static.net/uploads/4480585/normal_6068d2f245a59.pdf
    • https://cdn-cms.f-static.net/uploads/4419430/normal_605ae96db3c0e.pdf
    • https://vakalebixop.weebly.com/uploads/1/3/5/3/135339933/e18afdb828.pdf
    • https://static.s123-cdn-static.com/uploads/4419654/normal_5ff20f96b9f55.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wunupalezozerud/what_is_layered_protocol.pdf
    • https://s3.amazonaws.com/lomiwexuva/setup_netgear_n600_wifi_cable_modem_router.pdf
    • https://s3.amazonaws.com/pilazi/raroxo.pdf
    • https://s3.amazonaws.com/niporofez/missing_angles_of_a_triangle_worksheet.pdf
    • https://s3.amazonaws.com/mexavofezoxi/chemistry_alcohols_phenols_and_ethers.pdf
    • https://s3.amazonaws.com/naxozelozude/what_are_the_symbols_on_a_multimeter.pdf
    • https://uploads.strikinglycdn.com/files/b0989508-c556-4c98-af72-6caf75918ae8/bassanio_the_merchant_of_venice_character_analysis.pdf
    • https://uploads.strikinglycdn.com/files/0c7ffbf1-6c3f-4255-9154-d964646e6ae9/mikurazuwo.pdf
    • https://s3.amazonaws.com/nisoxow/reliability_in_research.pdf
    • https://s3.amazonaws.com/sinadi/importancia_da_biblioteca_escolar.pdf
    • https://s3.amazonaws.com/pizivurapab/pifofuledubuvovudanav.pdf
    • https://s3.amazonaws.com/defujo/742688453.pdf
    • https://s3.amazonaws.com/xuvamuba/zokukuwaguxasefupopawason.pdf
    • https://s3.amazonaws.com/kizugokofo/guide_gunung_silipat.pdf
    • https://s3.amazonaws.com/xasovewipeje/31426490089.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f819.bin
d0ae916e4b9beb0a571090393e8c18dafbc7c2b8374e7fc769ba6650a1507419
pdf-font-stream PDF embedded font (sfnt) at offset 0xF819 5804 bytes
font_01_sfnt_off00010bd9.bin
6bdfb09767e3961a701255a74447f8c24c9aa7c4fd874368ff78d0701d52035b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 10732 bytes