Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f38109c33061394…

MALICIOUS

PDF

64.1 KB Created: 2021-01-08 07:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d7a098c03fa47ebb52471ce7e8d05da7 SHA-1: 8f618d533aa9ebdbcdb63ba0150a375c28213a75 SHA-256: 3f38109c330613944c3bd472ff591aa56cc20d877b5ab9381b27ac826b19591e
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates an attempt to direct the user to a malicious site, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL is sufficient evidence of a phishing attempt.

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://ggtraff.ru/123?utm_term=sins+of+a+solar+empire+star+wars+mod+steam In PDF document text
    • https://cdn.sqhk.co/rexixugepir/OibWigg/fun_and_interesting_facts_about_badgers.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/gfjaWNF/kalajoxovodesewefam.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/aOhaidg/85956790455.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/Zaidpdp/35209445218.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/Yuf0CVE/emergency_veterinary_services.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/abba2669-73f4-4b84-95f3-2ad5be9f9336/61948451109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bbc925b-06e9-4bf0-8b36-fe63cf46b8b4/veryfit_2.0_smart_band_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1397267-85c5-4ce7-826c-77dd49527292/polaroid_onestep_close_up_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c236e1e5-8122-4f6c-a91d-736bdf6b6bee/13582985419.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/89449124341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8208769-067d-4352-8dda-4ecd61d2fe7e/french_revolution_timeline_activity_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e0438cf-f401-42ea-a708-0023c7bade61/64168947023.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB642 5380 bytes
SHA-256: 9cb8938c4cc247770615e4747c26142b0bdeb9f4bbc7c41590fc7a87440abc12
font_01_sfnt_off0000c884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC884 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off0000d3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E3 9236 bytes
SHA-256: b22d3ba9f8627429a05e1c17b17ee97081ab072aab9a9dccce8a8a2aad8a1bcd