Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d8706766953834e…

MALICIOUS

PDF

92.9 KB Created: 2021-03-15 19:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa42b7a02667fef2366870f0ac19faa9 SHA-1: a1450318c57f701d3651572ef3a4124bcbfe2ca8 SHA-256: 6d8706766953834e9a6ffb8f326668d9d88f93720407aa95ac3f54a6b1444713
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, forming a link farm, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness. The primary external URI, 'https://dafemum.ru/wix?keyword=fairy+tail+magic+guide+ios', suggests a lure to a malicious website, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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-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://dafemum.ru/wix?keyword=fairy+tail+magic+guide+ios
    • https://cdn.sqhk.co/ravusigi/Djehbgi/stacker_2_energy_pills_side_effects.pdf
    • https://gavuwili.weebly.com/uploads/1/3/1/0/131070236/78a80b133e63501.pdf
    • https://zerevodajerut.weebly.com/uploads/1/3/4/5/134502997/3389047.pdf
    • http://xojuxelase.medianewsonline.com/47739818707.pdf
    • https://woziwapimarezex.weebly.com/uploads/1/3/5/4/135400795/4f6fbd16030.pdf
    • https://pipabujul.weebly.com/uploads/1/3/2/6/132680817/7354307.pdf
    • http://dadivasim.sportsontheweb.net/true_story_the_professor_and_the_madman.pdf
    • http://portkamesto.site/john_fraser_secondary_school_location65whq.pdf
    • https://cdn.sqhk.co/ferobisuw/djgyPGS/truck_driver_freeway_crash.pdf
    • https://cdn.sqhk.co/resozasevej/idghe06/smash_the_mall_stress_fix_apk.pdf
    • https://zotexujefu.weebly.com/uploads/1/3/4/3/134322023/sozamukapusoxov.pdf
    • https://cdn.sqhk.co/ximirujusuxo/dKk9ihh/wifi_file_transfer_android_to_ipad.pdf
    • http://svarka-aurora.online/dekozafoleliy9fsq.pdf
    • https://junimadegerozo.weebly.com/uploads/1/3/4/0/134096607/8d5fb1.pdf
    • http://kunujunekedi.mygamesonline.org/analytical_writing_assessment_gmat_books.pdf
    • http://bbbbbbbbeeee.space/38785315755aevx7.pdf
    • https://diwijavel.weebly.com/uploads/1/3/4/6/134691177/8757024.pdf
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/tezinunojixodo.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://famomijis.onlinewebshop.net/bapebawamapo.pdf
    • https://uploads.strikinglycdn.com/files/2721dfe5-1a95-4c13-8eb9-95a9cf28479d/iomega_home_media_network_hard_drive_firmware_2.104.pdf
    • https://uploads.strikinglycdn.com/files/25df3782-ec28-4426-a3c7-9c205f35dd4d/42672729617.pdf
    • http://bibezakomi.myartsonline.com/anime_characters_stronger_than_one_punch_man.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000107a2.bin
5f7b260cc5b1feb6b3564bd42761427d0a926819a600c0fc268875ddbca8ae03		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x107A2 14652 bytes
font_00_sfnt_off0000de51.bin
3b8e545d5c3660ea9261c8bad83715c6fb38d98da0b186579ea1deab14d72c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE51 7208 bytes
font_01_sfnt_off0000f65a.bin
f35a1bf395bbc155750701f6f621d61d537351aac07d5564204d472b0519fd5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF65A 5092 bytes
font_03_sfnt_off000130d6.bin
0f336167f10f237ed2be5669e0089e97d5ac81c8f452c5204cbe28cd354af286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130D6 11208 bytes
font_04_sfnt_off0001572d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1572D 4324 bytes

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