Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d60b00e2d8940eb…

MALICIOUS

PDF

73.7 KB Created: 2021-01-24 19:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c811a171920395dda962b814ccfd7ec5 SHA-1: c8bdecf241ff72fd4b35c6a1ca7b9535dda6cd05 SHA-256: 7d60b00e2d8940eb5eb51c6ea67fa542239c85b4e1d51d40fe90c9be259c721b
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least two pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to game hacks, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to sites hosting further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://traffmen.ru/aws?utm_term=battle+cats+hack+ios In PDF document text
    • http://shimano-stradic.ru/jewebajef23dz0.pdfIn PDF document text
    • http://hiziryigit.online/kiwafajufosale7wnpt.pdfIn PDF document text
    • http://reduslim-shopofficial.site/two_dots_onlinezcm6b.pdfIn PDF document text
    • https://nulokedebuzeb.weebly.com/uploads/1/3/4/3/134310318/ximaxomivux-fujesibu-nubimedix.pdfIn PDF document text
    • http://bigswinner.space/7561135246039q5i.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/bOoWugh/space_attack_space_shooter_2020_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391000/normal_5fc7c74647fe6.pdfIn PDF document text
    • http://molotkov.site/gacha_life_clothes_edit_hoodieryfv0.pdfIn PDF document text
    • http://palitra-cveta.ru/92565361144uteoe.pdfIn PDF document text
    • http://igcopyrightforhelps.com/70675680214otyw5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390664/normal_6005eb352ed8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427094/normal_6009648e9fcf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444386/normal_5fe73d3854139.pdfIn PDF document text
    • http://yoga-fitness.space/color_chart_hair_wheelo5dp3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bofake/ticket_booking_website_template_free.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_off0000da97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA97 4584 bytes
SHA-256: 2a25b8fc32f75f44306728830a2c28376a9bd1643cfbf13c69c5d7d2f9edf165
font_01_sfnt_off0000ea2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2A 9892 bytes
SHA-256: 9147b97bf8ea76c449a3e257bacf50c0865e5a26efc7fef661d80ef0a7422361
font_02_sfnt_off00010bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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