Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec27d144fd031cef…

MALICIOUS

PDF

81.3 KB Created: 2021-04-02 05:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abbc29b2ffb167dc12548328491f08df SHA-1: 174c6371e96e27857fbca353af75b17cad04b7fd SHA-256: ec27d144fd031cefb19acd490da358c384b214e425fb84ad00b89ff84b3b9624
196 Risk Score

Malware Insights

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

This PDF document, generated by wkhtmltopdf, contains numerous external links, suggesting a link farm or phishing attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates it may be used to trick users into downloading password-protected archives, a common tactic to bypass gateway security. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://lozipotod.ru/wix?keyword=onn+charging+pad+instructions
    • https://cdn.sqhk.co/disidudi/jyy8Oif/nba_2k20_release_date_non_pre_order.pdf
    • https://puxefulido.weebly.com/uploads/1/3/1/3/131383426/6629181.pdf
    • https://pilinosaw.weebly.com/uploads/1/3/4/8/134852056/jerewirofovem.pdf
    • https://jefamozalubibul.weebly.com/uploads/1/3/1/4/131438275/rosiferuriwa.pdf
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/jomodakejopomabap.pdf
    • https://cdn.sqhk.co/rujiwujik/jFkpjar/96985552549.pdf
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/sasumin_dejojega.pdf
    • https://gavemipaxok.weebly.com/uploads/1/3/2/6/132680822/5ecbde8c.pdf
    • https://cdn.sqhk.co/naziwixolagu/X8ge1bh/tijunufamoxewobadum.pdf
    • https://cdn.sqhk.co/wimedizi/egjhBjj/teppanyaki_grill_laurel_coupon.pdf
    • https://nurobajaxi.weebly.com/uploads/1/3/4/5/134507542/1414687.pdf
    • https://kivobuduzuv.weebly.com/uploads/1/3/0/7/130739084/681577.pdf
    • https://cdn.sqhk.co/koditisalupe/gSiiNgh/85390709358.pdf
    • https://cdn.sqhk.co/towinomer/clw2Dge/the_legacy_state_college_parking.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_9ae3b184364d4daaa08454c8abea3e4e.pdf?index=true
    • https://2386e270-bd20-42c1-b3e5-1ba7eaa1d68d.filesusr.com/ugd/b4f0c6_64e85c8ac91c4026acd17a61a2484efb.pdf?index=true
    • https://6843e3eb-5573-46e1-90a0-370cfc2b4a0d.filesusr.com/ugd/89b1bc_dee5c319f3714a56840634f96464d6a4.pdf?index=true
    • https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_c5801a193686471c89e7d79db4946123.pdf?index=true
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_19e31412e60548e29652c54089c27a49.pdf?index=true
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_941d80b5349348ea92a30be41fbabe37.pdf?index=true
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_0c1b1595c2f944be884c6d22fae063c8.pdf?index=true
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_cf7ea0bff7e14429b77d6621246d3e10.pdf?index=true
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_8f0624e3b9c446c5a3912d8d33a26f1f.pdf?index=true
    • https://569e8712-2873-4b93-a654-ea71b6b809e3.filesusr.com/ugd/345929_59b1233e22534c13b5dfbd76acd84d88.pdf?index=true
    • https://fccid.io/2APXNLACA120/User-Manual/User-Manual-4568212.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_off0000fcd9.bin
e89356a0f73ca87565f42f9458ce1bf09c20b757b1afbc32851fb06bac811c56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD9 5332 bytes
font_01_sfnt_off00010eec.bin
0ce3d2f31dd4825a1ebd03b3cf50e144c1926735773ec5114c4ea4bc2b0917e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EEC 12144 bytes

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