Malicious PDF — malware analysis report

Static analysis result for SHA-256 970bf3a1825e7ff9…

MALICIOUS

PDF

44.0 KB Created: 2020-10-29 07:18:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 70de3b6be407c50b3d5a218b27808447 SHA-1: dc635494fa33a22a002746fea63a79d1d69f5e9e SHA-256: 970bf3a1825e7ff979534c395bc0d0babfad073189adbfe25df50cf02761150b
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://gettraff.ru/strik?keyword=sloth+from+zootopia+meme In PDF document text
    • https://fixasamajiwige.weebly.com/uploads/1/3/4/3/134318971/guzabilazifu_jojudiwavuxo_xuxegoruzo_finexuxopixuta.pdfIn PDF document text
    • https://sokazavuse.weebly.com/uploads/1/3/1/3/131378988/xixovan.pdfIn PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/3173898.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://cdn.shopify.com/s/files/1/0432/4347/1008/files/yogi_stress_relief_tea_nutrition_facts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e37ceee-4891-486f-904c-534ab569af1f/titugowaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4269/9936/files/xubopexujam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf2c621-e8dc-47dc-a596-259d9b3ce349/86722769148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e512f1d-c24a-4bb2-9ae3-f5e5f3402f94/58155942661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3656/4375/files/arterial_system_of_human_body.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43188562-a0a4-4e3d-942b-a0e0878bb7bc/xugotatosinoxoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58064908-022e-41c8-966e-723399f7c758/tutowozusegi.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/bolewutaxifiwujezupedexum.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/nicholas_sparks_safe_haven_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55596f77-e3aa-4d0e-b52c-c2c0e3e9276d/2539559847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3186/2679/files/6597758367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f68464-bb77-428f-890f-e36b4350d57f/daikin_aircon_remote_manual.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_off000061dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DC 4796 bytes
SHA-256: 2b307129908a987e4c9f74e142150fa7e6d70015c87087b44bd34baeff396895
font_01_sfnt_off00007225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7225 10400 bytes
SHA-256: b156d748a54f84261d6d624df73776db21fd242cf8eb7ab06d9c3eb85d376ba3
font_02_sfnt_off00009557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9557 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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