Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8f9502e1317dfc…

MALICIOUS

PDF

40.7 KB Created: 2020-11-07 23:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b523ecdbbc6af6c2d90bb706b5477d70 SHA-1: d07bdd4a4fa17ba8378062925d2979251647e3b6 SHA-256: cc8f9502e1317dfcd35de5f26c9c7a65f859c153eb2f54cb65ed99226df11f00
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/aws?keyword=the+cast+from+the+movie+born+losers, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?keyword=the+cast+from+the+movie+born+losers In PDF document text
    • https://mozesewopizudal.weebly.com/uploads/1/3/4/3/134363743/804453.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/fevetefubaran_gesijisixixugu_jizinetiver.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/tawisez_napamibikilin_kebovur_nivirunodenasez.pdfIn PDF document text
    • https://domuzowejiro.weebly.com/uploads/1/3/4/3/134360268/6162435.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/gupuso/wonex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5acd53-d378-48c7-8bf6-da57ae2e653a/deleon_springs_boat_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/95604186045.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/learn_arabic_in_urdu_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4acad5b-94db-483c-97b8-c5f4166de9ba/frases_hinata_shouyou.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/old_age_sticks_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da1579d-4e54-4c4e-96f0-2cfc29b4e058/dutevumonufopegifalud.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_off00006163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5272 bytes
SHA-256: 17bd216e3c32976315c8dde7c1e04d83e53c941a48419aa34f07645a92ef11a2
font_01_sfnt_off00007331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7331 10260 bytes
SHA-256: 37395160b3c2522c6e81babde15b245ac11a123a324486bfc4d1a3344e9e9d99