Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44fad7f7d9dbd06…

MALICIOUS

PDF

44.4 KB Created: 2020-10-17 08:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d9a85d865752cb4435285f173edd0522 SHA-1: 42a9bc8ecc51d0581fa4f0ca67e8bae5b9f30f07 SHA-256: f44fad7f7d9dbd06a85ed48e0b37ac35b3683bcde2f6264292694372dc9ee4fc
94 Risk Score

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://ggtraff.ru/wb?keyword=investigacion%20cualitativa%20y%20cuantitativa%20y%20mixta' is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure itself facilitates the redirection, suggesting a phishing or malware distribution attempt.

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://ggtraff.ru/wb?keyword=investigacion%20cualitativa%20y%20cuantitativa%20y%20mixta In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371005/normal_5f88a672b548a.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5f894baa772b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f87479961195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f89ce75be695.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/1/0434/0806/4677/files/korean_alphabet_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/39345644562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5575/6965/files/struttura_uomo_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3926/0309/files/real_soccer_2012_apkdata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/loomis_figure_drawing_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0126/9405/files/jefodumebotidagivenokiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec9f1d84-28a4-4607-8026-c6bd4604e350/misuvigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/646dae24-bf52-48d6-88d4-7dca9e991832/8819043740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76d07055-764b-4e1f-b1e5-75d3ea917bcf/dawote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86287a99-063e-46ab-af4a-9b79ac7b64d1/27025095088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6117f9b0-902c-435d-941c-ca11b9d2c801/ruwasenipavosutomotavat.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_off00005efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 5072 bytes
SHA-256: 4c5feafff681ca6d67bd4c0aef6901c3c8d85355b51f2456ac491a1bbffb20c2
font_01_sfnt_off00007037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7037 11092 bytes
SHA-256: e303a157e22a843173c33fcb5da1c993f37faf8dbbbf84e7578570b4a5c77066
font_02_sfnt_off00009435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9435 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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