Malicious PDF — malware analysis report

Static analysis result for SHA-256 8036a28b52d13425…

MALICIOUS

PDF

78.8 KB Created: 2021-03-08 00:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: fde2421c7ae13400ec569fbbccd565e5 SHA-1: 55523619c8ebc5da006307c2286e1d97397a8030 SHA-256: 8036a28b52d13425f698c58e5319bf75171c1a20aeb88edfeb7038403e3c25fc
186 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'Call of Duty Ghosts APKPure', likely a lure to attract users to click on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/wix?keyword=call+of+duty+ghosts+apkpure PDF link annotation
    • http://jesofoma.getenjoyment.net/photoscape_x_review.pdfIn PDF document text
    • https://juvikawupuw.weebly.com/uploads/1/3/1/4/131409017/pewazukefa_pasepitijuvapoj.pdfIn PDF document text
    • http://com-copyrighit.com/826610657450iacz.pdfIn PDF document text
    • http://alfa-quest.ru/40590417133ekox7.pdfIn PDF document text
    • http://spencermcman.us/80302088591eqxrl.pdfIn PDF document text
    • https://safesawugu.weebly.com/uploads/1/3/2/8/132814337/tomutu.pdfIn PDF document text
    • http://podarokinsta24.online/b._ed_degree_form_aioucbtb7.pdfIn PDF document text
    • http://bupetud.xyz/bwv_1007_guitarytcyp.pdfIn PDF document text
    • https://vedakevuvapi.weebly.com/uploads/1/3/4/0/134013486/2212319.pdfIn PDF document text
    • https://rixagaxovexi.weebly.com/uploads/1/3/4/0/134000332/c6dc32600c5515.pdfIn PDF document text
    • http://itsamorem.com/what_is_usually_the_penalty_for_breaking_a_leaseykbry.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/BxHhdw1/ninja_turtles_legends_game_data_file.pdfIn PDF document text
    • http://rolivazugatar.scienceontheweb.net/do_you_capitalize_than_in_a_title.pdfIn PDF document text
    • https://cdn.sqhk.co/papowepu/gcPkgcm/wolf_wallpaper_4k_mobile.pdfIn PDF document text
    • http://physcoo.com/what_is_the_weight_limit_for_baby_car_seattvuot.pdfIn PDF document text
    • http://anarchymedya.com/3220661402911gn1.pdfIn PDF document text
    • http://smeshnoykir.space/senuvmuuv6.pdfIn PDF document text
    • https://cdn.sqhk.co/vivakawibaki/ghb9Zib/nafevitiwe.pdfIn PDF document text
    • http://harmony-market.ru/xofitugojutu881v7.pdfIn PDF document text
    • http://fulukegoror.getenjoyment.net/nezedaxu.pdfIn PDF document text
    • https://ziripovamenof.weebly.com/uploads/1/3/4/6/134647136/tidama.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_05294925e71d4dcb8ee7d1b2216d58a5.pdf?index=trueIn PDF document text
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_7af646a1ba7246ab925933ed4050ac4c.pdf?index=trueIn PDF document text
    • https://8f1ef4f7-3f23-41ef-a3d6-4e5873a175a2.filesusr.com/ugd/d318ce_bbfcfcb0942e4697bc632db8d3551f3b.pdf?index=trueIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_f54da38597284d6da97b74cb2e099c24.pdf?index=trueIn PDF document text
    • http://zitasixan.atwebpages.com/likepakikuv.pdfIn PDF document text
    • http://vesedakowata.onlinewebshop.net/45459744677.pdfIn PDF document text
    • https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_68ebb7b5b3454c418200aa1c3b5b4d34.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CC 5376 bytes
SHA-256: 3532fee7dd147a2cf2c361a78973eea79c315f4a76e4437f10210dcbfda684c8
font_01_sfnt_off0001051a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051A 12628 bytes
SHA-256: 68fba044fd58b500c8ca510ea1e5ff71739f07cdc832fd633278ee045f69ae8a

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