Malicious PDF — malware analysis report

Static analysis result for SHA-256 49af7bd8ce2dbeb2…

MALICIOUS

PDF

80.1 KB Created: 2021-01-14 10:34:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 15ab6abe71b4abb02a17d232a921c241 SHA-1: 7ab6f22c7f3e7f2806463dd1bdb35439125cf8ee SHA-256: 49af7bd8ce2dbeb2b3331e24692fea4fb7479f6317708bab333c26d98fe726c3
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, pointing to various URLs. One prominent URL, 'https://trafffe.ru/123?utm_term=fuan+no+tane+plus', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffe.ru/123?utm_term=fuan+no+tane+plus PDF link annotation
    • https://cdn.sqhk.co/moviferu/dvjhibX/linulepe.pdfIn PDF document text
    • https://xabetujozuveko.weebly.com/uploads/1/3/4/6/134682227/newikolunalugu.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/e237123bd83602c.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/eghj0xz/tudejorulumapewin.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/matogapibelifiv/pusarevuzaved.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/gefedujufunalawafen.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/fegizito.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/53326985701.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/prevention_of_contrast_induced_nephropathy_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/tisuma.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/abnormal_behavior_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/surviving_sepsis_guidelines_2018_ppt.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_off0000d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD689 3188 bytes
SHA-256: 943d58814e9541d2e3d0633ce8cbf08126076b38ededb9af1ed93aaca2504cc7
font_01_sfnt_off0000e1cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CD 4672 bytes
SHA-256: a4d638f85ef5b607a8aa3df5b93ab5e30b293fed26f38e0c76318da94170f10a
font_02_sfnt_off0000f1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CA 13964 bytes
SHA-256: d3afe09e50ce81bd61f2243b78bf6fed4baee365cb5e3eda66dcb75faeb4a2ac
font_03_sfnt_off00011cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD2 16172 bytes
SHA-256: dc81cd4a696a878a4fbbde3493283acaa0ebb1b6d8b911827813da393fc73cd0

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