Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a0bfb1b02ff078…

MALICIOUS

PDF

80.2 KB Created: 2021-03-06 23:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1f9d94cb8e99404355afb550c9887d6d SHA-1: 3fd8ae44d87e2ad874e6e3f0dbb6062b449f875b SHA-256: 70a0bfb1b02ff0785ac9efa2dc6433071c4dc52dc82dfeae2424b3c065d2816d
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating a mass external PDF link farm, with one prominent URL pointing to a "clash of clans hack android no root" lure. While no scripts were directly extracted, the PDF structure and the nature of the linked content suggest it's designed to drive traffic to malicious websites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://mezovuduw.ru/wix?keyword=clash+of+clans+hack+android+no+root PDF link annotation
    • http://veruvipavopa.getenjoyment.net/dell_m6800_dimensions.pdfIn PDF document text
    • https://fanizoliboligom.weebly.com/uploads/1/3/1/0/131070566/1101454.pdfIn PDF document text
    • https://nizifaweneli.weebly.com/uploads/1/3/4/5/134589853/77a420d559dc72.pdfIn PDF document text
    • https://zedowami.weebly.com/uploads/1/3/1/6/131637063/bowunira-sizuv-gegelukedun-gugofijafemuf.pdfIn PDF document text
    • http://wuramegojuluz.mywebcommunity.org/vomadewumepakomuloto.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/256607462647r72m.pdfIn PDF document text
    • http://uspeh.icu/siwegeluxabukujafo7jw82.pdfIn PDF document text
    • http://dommasters.site/what_do_they_test_for_when_youre_pregnant97gm0.pdfIn PDF document text
    • https://zedawaven.weebly.com/uploads/1/3/4/6/134634651/baguj.pdfIn PDF document text
    • https://mirezavofuju.weebly.com/uploads/1/3/4/8/134870541/5044650.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/lojidagonake.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/screenshot_assistive_touch_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/tepewalitepupoguzijikax.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/portico_bedsheets_online_shopping_india.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_afd412d332ff48fd94e9a98add178e6b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/50527910377.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_f7debae965c3488584646c3a5826dc44.pdf?index=trueIn PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_a3e742f59592494fb62e13325b22958f.pdf?index=trueIn PDF document text
    • https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_317102c7d33944d29282a9fe95dd771b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pidufozu/azure_information_protection_client.pdfIn PDF document text
    • http://sodowurivav.onlinewebshop.net/wepaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b7d1881-83b7-4b49-95b4-79e969ee315a/best_math_book_for_grade_4.pdfIn PDF document text
    • https://2d2b1dae-c014-4902-97e6-c3f1d56915cd.filesusr.com/ugd/70e5f7_c61258dbeea646de8a0400d00192f945.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/027469b4-6e60-43ec-93aa-25c108a3da9e/canvas_old_skool_vans_white_womens.pdfIn PDF document text
    • http://noratev.myartsonline.com/how_to_make_homemade_ice_cream_in_a_blender.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e9f047f-7833-46ac-a0cf-05ea084fcf35/chariots_of_the_gods_movie_rotten_tomatoes.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32C 2988 bytes
SHA-256: f244152f1735ecea2e0015db16f4eec7c19935d3b03785c1fb693a5a6caaf07b
font_01_sfnt_off0000fddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDC 5080 bytes
SHA-256: 25b7ff22b44ea8ec663acbe24239b085c7ffa46674a44059488af683d342bf21
font_02_sfnt_off00010f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F16 10444 bytes
SHA-256: 0a294e8b944a8fc4c69cf273f9a8622f1c671effaa6d25f1c916e1b39763350c