Malicious PDF — malware analysis report

Static analysis result for SHA-256 d18d79d400f8e4d3…

MALICIOUS

PDF

86.4 KB Created: 2021-03-20 11:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31770a3ba6e11e9308aef7ca8615fd6f SHA-1: d5a6a778c3bd327821011d7092444c89713e36de SHA-256: d18d79d400f8e4d3444bd1af767b926eaa3261a2b7aafdfc1d36907e243acf99
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the presence of external URIs and the overall classification suggest an attempt to exploit the user by directing them to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=chaos+papulatus+guide+maplestory+2
    • http://buwubaled.mywebcommunity.org/how_to_stop_casio_illuminator_from_beeping_every_hour.pdf
    • http://kameregeperiwaz.22web.org/7705504371.pdf
    • https://static.s123-cdn-static.com/uploads/4454163/normal_5fc6f2ce21d5f.pdf
    • https://cdn-cms.f-static.net/uploads/4455681/normal_603ecf82eda8d.pdf
    • https://mefosenide.weebly.com/uploads/1/3/4/7/134715399/5055791.pdf
    • https://cdn-cms.f-static.net/uploads/4413226/normal_601d15fbd6ba6.pdf
    • https://zutafagufagupak.weebly.com/uploads/1/3/4/2/134235067/6f65d5923c6.pdf
    • http://suwufexez.sportsontheweb.net/nabizizigakilexakal.pdf
    • http://nekimul.22web.org/wusizofidefar.pdf
    • https://bexokafosirur.weebly.com/uploads/1/3/2/6/132695536/b4641ffa89f36e.pdf
    • http://mujudesuxiropa.sportsontheweb.net/cycleops_bike_trainer_instructions.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://15e12281-0fef-4bb1-b284-2b61ddec1698.filesusr.com/ugd/6c5390_b6be7283c2e8407b9d3aea1b34141c7f.pdf?index=true
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_143d65b10d8f447884921ce57e6ccef2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/dfb1d0ee-25e0-42f7-990d-8f545e7c02e7/weight_watchers_by_conair_body_analysis_digital_bathroom_scale.pdf
    • http://renaxodemebi.rf.gd/adblock_plus_for_ie_free.pdf
    • https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_b0b1ff12157d4b5dbf54041745379e07.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f23b5d4b-2c66-4634-93ef-7d8ca493fdcf/can_you_get_lash_certified_online.pdf
    • http://mudepenota.epizy.com/81196508583.pdf
    • https://uploads.strikinglycdn.com/files/0ee1d31f-a117-455f-8700-cfea0f13ddaf/4331236905.pdf
    • http://navilifujux.rf.gd/how_long_does_it_take_to_write_morning_pages.pdf
    • https://ee42ee57-4547-4a8c-8a66-6cccb7f6869d.filesusr.com/ugd/2a9ad2_8054560e48c34ef2880de95d70b30c77.pdf?index=true
    • http://kavezusi.onlinewebshop.net/54552225862.pdf
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_d6050e55eb1c4568b32a2ced49f01bf0.pdf?index=true
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c4.bin
a62a87b08b7c1d5737230ab610dfba301e47aa9ff7b3be5999d878385c9fd796		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C4 5660 bytes
font_01_sfnt_off00010493.bin
57b59d8e466cc6d18fc2faf3e0b97f5e73fae337c4dee7d585dd6e4f9ee04ac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10493 5404 bytes
font_02_sfnt_off00011704.bin
7098e9b0d31a2c03ddfcf4b77b4a6f688d74be01ed702e193a91f221aead479a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11704 11264 bytes
font_03_sfnt_off00013d55.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D55 4324 bytes

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