Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfadd791eb50b22…

MALICIOUS

PDF

71.1 KB Created: 2020-12-07 17:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1398b3863dcedf0059944b205698235f SHA-1: b1b0f8cb1888cbe6f89aba6f2acc5a4f14897453 SHA-256: 9cfadd791eb50b221a287cf63ad4408dded54868f7b7fe605a5611b0ac2a680f
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/123?utm_term=oregon+state+baseball+tickets+stubhub' is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=oregon+state+baseball+tickets+stubhub In PDF document text
    • https://static.s123-cdn-static.com/uploads/4404512/normal_5fc4088105723.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/wavunot/tefamavejedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4570be-7417-4d62-9a0f-d19e791022db/86407665728.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5af7ef3d-a3ba-47fa-84d7-18ecaf7cb751/40145089445.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/77976013637.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/49495395127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/070816dc-0b33-4030-8675-32eca78efdb4/23995859407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a908389e-6e37-47f1-8988-bbfd90b34677/76398050646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84862b4a-094f-4f6a-80ba-5594d3ad10e8/the_light_in_the_forest_sparknotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069ef528-c52a-410b-bd4e-7b24c026fe31/lewifevupovowakewi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4007d74-20cc-4114-ba8b-74aaa676ac5c/beradefadavufunejeto.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/dutiferemalefetetijez.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5481b084698658e7b4183/t/5fc7d249681da4777abcbdd9/1606931018426/love_and_respect_workbook_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7abec32-31cc-4d1d-a508-04942b35b8c1/slotted_screwdriver_bits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dea33c6e-0bed-4f62-b1d5-6fac8fc47115/19649313923.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_off0000c929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC929 5176 bytes
SHA-256: 1c5c16b9f2552acd0ab92799a7a71c41ec834714e9797803c14bf953d149d01f
font_01_sfnt_off0000dabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABB 10896 bytes
SHA-256: a108316eaa2daeac7b38c7653480fa076e196beaeea9c5e0e1450328a847d69e
font_02_sfnt_off0000ff21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF21 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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