Malicious PDF — malware analysis report

Static analysis result for SHA-256 1819443496b741ac…

MALICIOUS

PDF

83.7 KB Created: 2021-01-06 04:45:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6e493e1bd9ea59224ef0516443560044 SHA-1: 65fbdc8b2b4c9e01abfd58df12bc37bc1c6e3419 SHA-256: 1819443496b741acf4d600899f2e12f4e9539d32933fdd363e4b0dd107f98048
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL and document content suggest a lure for a dictionary application download, which is a common social engineering tactic. No scripts were extracted, but the PDF structure itself likely contains obfuscated links or exploits to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffi.ru/aws?utm_term=hinkhoj+dictionary+free++apk+for+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479679/normal_5fe0b47ed477b.pdfIn PDF document text
    • https://cdn.sqhk.co/tisorobew/bhfgigd/guess_80s_and_90s_movies_on_amazon_prime.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/mabesetusaperel.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/alcatel_one_touch_manual_de_uso.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/81617169700.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/23537409626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/577e2893-2c59-46eb-a730-d890a84a8d0d/la_cebada_tostada_engorda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fae84f3-e10e-4cad-a65c-6ab41b97195c/34523295927.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/84676583381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/892689d0-8f8f-4f62-8309-7d20c7dfaa1e/xeziwezotuzalipaser.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/my_talking_tom_mod_apk_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/cfd_ace_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a2ecaae-cc68-4f86-a042-1bc7478ece1d/mofolinet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acebda1c-a2a3-479a-9ef1-1dc6f1fb470e/22406931823.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE002 5236 bytes
SHA-256: 3027434589f90eb81861563c360c4f59e88321d57efb6c455b9cdc9863980cf1
font_01_sfnt_off0000f1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E2 10808 bytes
SHA-256: 86e918e2f3119ce1574aa65dfc7271cf5f0c501779fd577e48e4b532f77a4063
font_02_sfnt_off00011733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11733 16132 bytes
SHA-256: 6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028
font_03_sfnt_off00012c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C66 5788 bytes
SHA-256: a3e8e6c71b8292692bf1b985d289da388aa1b9ec6e94765ff7571eba1a4bfd26

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