Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa39efa434ce03f9…

MALICIOUS

PDF

68.1 KB Created: 2021-01-28 03:28:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c48dfb4761371e2c73df2b6189924511 SHA-1: 6775d6d3046c7d14284d6c01c9b88f03d828bb11 SHA-256: aa39efa434ce03f9fbf1e4d3fb485dac3d3ba04d2080e8b051d5be69af547fd4
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious document designed to redirect users to potentially harmful sites.

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
  • 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://trafffi.ru/wb?keyword=cinelux%20plaza%20theater%20campbell%20ca PDF link annotation
    • https://butadagawonor.weebly.com/uploads/1/3/1/0/131070306/908954.pdfIn PDF document text
    • http://lovelid.xyz/download_game_my_tamagotchi_forever_mod_apkdebh1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490950/normal_5fdf923b042cc.pdfIn PDF document text
    • https://xoxomedeze.weebly.com/uploads/1/3/5/3/135308121/1222899.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5fc5c97e45c1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379236/normal_5ff2250ac03eb.pdfIn PDF document text
    • http://greyfruit.space/clash_of_clans_coins_glitchp2n1q.pdfIn PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/b63794.pdfIn PDF document text
    • http://ceiling48.ru/sword_of_shadows_book_5iq8k0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481821/normal_5fe34db18ab9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_5ff61737042f3.pdfIn PDF document text
    • https://dotanivim.weebly.com/uploads/1/3/4/7/134705276/mejitixoxoxiboroxo.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/022eac2383e64b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416514/normal_5ff258eec1de7.pdfIn PDF document text
    • https://debovibeki.weebly.com/uploads/1/3/4/7/134715081/b3684278.pdfIn PDF document text
    • https://sinuxogutit.weebly.com/uploads/1/3/4/5/134505158/fupipagesaku_kakirex_goxesapizusuja_kovegex.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/fekepon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xuzakob/68527263249.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/vezutofetavewedo.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/tikejekobuju.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD2 5156 bytes
SHA-256: 3f61ea49bc90d85f0b16c0fc195cded929eec5f8fd26dcce383bc2ec480a68d9
font_01_sfnt_off0000dc34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC34 12184 bytes
SHA-256: 6769548e414412c8e388577b84c23373501d5d8cca7b058d72b8ed71870dc67d

Open this report in the interactive analyzer, or submit your own file for analysis.