Malicious PDF — malware analysis report

Static analysis result for SHA-256 734297238179a51b…

MALICIOUS

PDF

78.3 KB Created: 2021-03-20 13:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 02fb151e4ac2b954c44753a75365140f SHA-1: 2df0ec137663bcaf8d3110ad3c6a26fa9ece9b60 SHA-256: 734297238179a51bffa34750456ee1866910814662296b1f66de44b9df2415d1
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely intended to trick users into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to the embedded URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/wix?keyword=529+area+code+america PDF link annotation
    • http://babysampler.com/what_is_the_storyline_of_the_nutcracker_balleth2ds8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476150/normal_604f23d443d46.pdfIn PDF document text
    • http://lenugaguv.medianewsonline.com/23884167055.pdfIn PDF document text
    • http://potenciy.xyz/metal_gear_solid_2_hd_apk2tsp8.pdfIn PDF document text
    • http://mirror-x.org/when_can_i_renew_my_ham_radio_licensexd4k0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_6013cc372f56a.pdfIn PDF document text
    • http://sepibuzare.22web.org/2017_cadillac_escalade_cue_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_6015b869e366a.pdfIn PDF document text
    • http://winoraama.site/40827485853q4dos.pdfIn PDF document text
    • http://webcam-model.online/19070946922xumh3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xirixepo/7314831397.pdfIn PDF document text
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_f51b837107cb4c46a45cd29b4dee3cc8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ximupuv/jewobeza.pdfIn PDF document text
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_fdbeb17664034128ae7a13d2ec5afc7d.pdf?index=trueIn PDF document text
    • http://lugivodunoxasi.atwebpages.com/99772077815.pdfIn PDF document text
    • http://mojuwuf.epizy.com/how_to_install_a_new_dishwasher_drain_hose_-_bosch.pdfIn PDF document text
    • http://kipejefanowisu.atwebpages.com/what_is_the_structural_frame_in_art.pdfIn PDF document text
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_a88e8469de374c28ae44d88b2b95d19e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/orangutan_baby_images.pdfIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_acaccb2d9bc7436f82abc3f24b60caf8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vovuzize/bombay_tamil_movie_songs_starmusiq.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B9 4792 bytes
SHA-256: 2a5b9364cfe7df33e232a140fe93879fd059fb1744c548c2d42b6cf9293573e6
font_01_sfnt_off0000f8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F8 10968 bytes
SHA-256: 6a294e7fab12b416f88deb2caac6dab13e153f4385f4537a19ebc37c18ad4091
font_02_sfnt_off00011e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E38 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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