Malicious PDF — malware analysis report

Static analysis result for SHA-256 185363a0ffa10cd0…

MALICIOUS

PDF

90.3 KB Created: 2021-03-22 11:38:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8185e8ba5a473dc465243693cbbc6aeb SHA-1: 1a745f418b6ef96016d9da7fd9c2999cfcd1b0df SHA-256: 185363a0ffa10cd0bc2ad369c95f9cc949ea79d9fa94be4cdc1e5f3cf57582ca
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result for a common query, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect the user to a malicious site, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/aws?utm_term=how+to+remove+door+rubber+on+lg+washing+machine
    • http://vufiwopader.medianewsonline.com/spoken_english_in_urdu.pdf
    • https://murasujudadalox.weebly.com/uploads/1/3/5/3/135338307/wonapukaweni_perirokami_siwufe.pdf
    • https://cdn-cms.f-static.net/uploads/4469126/normal_6025e21389679.pdf
    • https://cdn.sqhk.co/vifekodilevi/8ghfUjc/vuriwepowawavotezup.pdf
    • https://cdn.sqhk.co/lexuxeza/gialXhb/knight_of_swords_love_advice.pdf
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/jazonugiwifi.pdf
    • http://rowowesofazov.medianewsonline.com/ropoxapu.pdf
    • http://sevezor.scienceontheweb.net/10171500028.pdf
    • http://sadovik.me/jodovebo7qvt2.pdf
    • https://static.s123-cdn-static.com/uploads/4485800/normal_60024ea76c64a.pdf
    • https://cdn-cms.f-static.net/uploads/4475563/normal_6047207422ecc.pdf
    • http://premium-cinema.com/sir_duke_sheet_music2e1tr.pdf
    • http://comp-arenda.site/is_gluten_free_stuff_bad_for_you60n0j.pdf
    • https://cdn.sqhk.co/mumeriretepi/haZijC2/idle_highway_mod.pdf
    • https://cdn.sqhk.co/vopofuxo/cifQ3id/vujejuzuwux.pdf
    • http://everydays.space/pevatokawizfvom.pdf
    • https://static.s123-cdn-static.com/uploads/4450514/normal_5fd068517dd27.pdf
    • https://cdn-cms.f-static.net/uploads/4427091/normal_600c7f1023bdd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zizenatoxu.myartsonline.com/fundamentals_of_seismic_tomography.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e3e.bin
c08d01ada15cdfbc53af933f9bec5c1469796faf2cad8e704233b5e6ef864884
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3E 5608 bytes
font_01_sfnt_off00012134.bin
001106e5f045b0b3fa37ba9878490f4d7344ecc075be4fcc7c63d92883c5ab2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x12134 10840 bytes
font_02_sfnt_off00014633.bin
51babe3b44e703ca5a92278b053c112c5c116674d3b708c8e2cb3e4aa6bd9a04
pdf-font-stream PDF embedded font (sfnt) at offset 0x14633 16148 bytes