Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba61e7e720911a02…

MALICIOUS

PDF

52.6 KB Created: 2020-08-28 16:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f72c070bb089ebca6b66fa84651193d2 SHA-1: d14d06a40891c705f6a1a51ea69096194b85a58d SHA-256: ba61e7e720911a02d398fbed214e1c2bfadb78b9ded0bffdaed438af4109025c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as search results for 'Fer a souder electronique leroy merlin', leading to a malicious redirector. The ML classifier strongly indicated maliciousness. The document body itself is heavily obfuscated but contains the primary malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ttraff.club/pify?keyword=fer+a+souder+electronique+leroy+merlin
    • http://files.tfitstudio.com/uploads/1/3/1/0/131070336/veduvipiga.pdf
    • http://files.indranisingh.com/uploads/1/3/1/4/131407958/vavexopewe_pepolo.pdf
    • http://wavug.centraldrivewaysstratford.co.uk/uploads/1/3/0/9/130969260/toxido_baragolakobalu_vateve.pdf
    • http://files.austindebateworkshop.com/uploads/1/3/1/4/131453620/jomitox.pdf
    • http://files.drzhuweimin.com/uploads/1/3/0/8/130813582/4969814.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/vazikukodopunovuvuda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdf
    • https://cdn.shopify.com/s/files/1/0464/6089/5384/files/avneet_kaur_new_song_yaari_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/kugolawufikexovunuvofetoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/rijomaforexomaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6644/8277/files/sukumumuwalewe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/74520526804.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/91921854124.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/54370894450.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/59297607621.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/vowels_and_consonants_in_english_phonetics.pdf
    • https://cdn.shopify.com/s/files/1/0432/7669/7760/files/tufarokamaxowil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1535/files/android_tv_file_manager_pro_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/5091/0364/files/aol_desktop_for_macbook_pro.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008763.bin
355f6c08e294d524b6a83fb677664c743db65aeeab4a4a51ea43cf3a8d9c4be9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8763 5268 bytes
font_01_sfnt_off00009939.bin
e03123776f66989eb32ee20d2f0307231040c95446f0834649965f005197a307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9939 13848 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.