Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67c6c614e717b7b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-05 23:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: daee4203eb0477fe6cf8c9990d002d98 SHA-1: 439014ee4b2778176be23a732d41b4934c2ddd5e SHA-256: e67c6c614e717b7b1c682a6e426d754cf265466637abeee13a1edd95cc6bd584
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous external links, with a significant number pointing to potentially malicious domains like 'xezojetit.ru' and 'dubezotamepaloj.weebly.com', suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest the document's purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/wix?keyword=charlotte+danielson+framework
    • https://dubezotamepaloj.weebly.com/uploads/1/3/5/2/135297843/a7f373a80.pdf
    • http://pawomodom.medianewsonline.com/how_many_calories_in_a_small_buffalo_chicken_pizza.pdf
    • https://cdn.sqhk.co/noxisoture/bjerAgc/aplikasi_dompet_bitcoin_indonesia.pdf
    • https://safupoxex.weebly.com/uploads/1/3/2/6/132683070/c47e34d.pdf
    • https://cdn.sqhk.co/givikofuf/bgh5IqS/27100108014.pdf
    • https://gebevomipo.weebly.com/uploads/1/3/0/7/130740462/f7e8bc9b510a.pdf
    • http://rawiduti.medianewsonline.com/sportspower_15_ft_trampoline_enclosure_instructions.pdf
    • https://tomovomat.weebly.com/uploads/1/3/4/6/134617768/rudetubedusugi.pdf
    • https://cdn.sqhk.co/runudori/dQjaXjd/fakivatojugo.pdf
    • https://duvutotan.weebly.com/uploads/1/3/0/7/130775700/fatoxinutekurif_famunigokeku_ligulisizadeg.pdf
    • https://gupovokezatiku.weebly.com/uploads/1/3/4/8/134878629/kopagexafumenumom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8dc8a006-9384-4b96-bd5a-c41f22c1aa4c/67872503258.pdf
    • https://uploads.strikinglycdn.com/files/14d4c788-d223-4efb-938d-cec980860095/mesa_dual_rec_rev_g.pdf
    • https://uploads.strikinglycdn.com/files/c4e2f29c-cf00-4079-a332-d284041cf0c5/lopojezadokedudilozabu.pdf
    • https://uploads.strikinglycdn.com/files/b83a196c-b0bc-491c-9c5e-36cbae69b373/canon_imageclass_mf4450_windows_10_driver.pdf
    • https://uploads.strikinglycdn.com/files/1a448fe1-0a67-4395-82fe-42f0d8de2a9a/gigaxobu.pdf
    • https://uploads.strikinglycdn.com/files/33f303f8-3ee0-4ef5-95ab-6e3ff3ddacaf/purukiredaxad.pdf
    • https://uploads.strikinglycdn.com/files/65dccc62-ca8d-451b-9871-fd0202fe5850/2501215766.pdf
    • https://uploads.strikinglycdn.com/files/58c0d032-b68f-47e8-b023-1da7b1c64856/75132340818.pdf
    • https://uploads.strikinglycdn.com/files/a09a3dae-5ca5-4cbe-9e9e-81b48b1834a5/roland_barthes_quotes_death_of_the_author.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e773.bin
90f25ebac8008e31d88abe34be66bf2aae31ed28fb8628b562b5fc2eb5982e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE773 5208 bytes
font_01_sfnt_off0000f909.bin
b07d7f0bd50b2cc32ba0b9ea361eb593d479b0951472ad47a33d32beb82ca2bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF909 10348 bytes

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