Malicious PDF — malware analysis report

Static analysis result for SHA-256 a995c04922846e2a…

MALICIOUS

PDF

69.5 KB Created: 2021-01-13 08:26:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9a9a1ca602ecb4d61753bbfa819ea66c SHA-1: 472c378b54778b174112c6fb3d97c7d575091c36 SHA-256: a995c04922846e2aaa32c796a6f2d567dda79609d364122c2a8f4e154c7218db
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL, 'https://traffking.ru/wb?keyword=marco'%20s%20pizza%20menu%20prices%20specials', suggests a phishing or malware distribution attempt disguised as a pizza menu. The ML classifier and ClamAV detection further support its malicious nature, indicating it likely serves as a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://traffking.ru/wb?keyword=marco In PDF document text
    • https://site-1238581.mozfiles.com/files/1238581/43913842493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_5fc1566af3540.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/4hahZjg/45172741149.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/oPTldjd/epic_word_search_printable.pdfIn PDF document text
    • https://site-1217518.mozfiles.com/files/1217518/picsart_pro_mod_apk_onhax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464068/normal_5fdf7308444f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5fa89d1846761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405946/normal_5fe92e1169a79.pdfIn PDF document text
    • https://site-1224368.mozfiles.com/files/1224368/suborilomepituva.pdfIn PDF document text
    • https://sadupomojafex.weebly.com/uploads/1/3/0/7/130776775/292de353.pdfIn PDF document text
    • https://cdn.sqhk.co/telupiza/dijhhjV/51238224493.pdfIn PDF document text
    • https://todoxaladavefuk.weebly.com/uploads/1/3/4/5/134529573/zuzuleb.pdfIn PDF document text
    • https://site-1177846.mozfiles.com/files/1177846/screen_timeout_settings_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17A 5168 bytes
SHA-256: f1947ee2b4b081c05d82a0e7eb5336d19087bc622efda6744423bed57eba429d
font_01_sfnt_off0000e312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE312 11208 bytes
SHA-256: 4385b545eb19ea4d78ccf830447dcc5531905cb0a5cf6d6655db23ab07a8f135

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