Malicious PDF — malware analysis report

Static analysis result for SHA-256 599e7104fe45e71d…

MALICIOUS

PDF

39.8 KB Created: 2020-09-30 14:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e426800930fc233a2155b77ab23fdbe1 SHA-1: b8504036af48dc7bd56cd946e943baad0187412d SHA-256: 599e7104fe45e71d8d3245bdcd163bb97bcbd9605d4855ac7cafc9620cb30af5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Axis bank car loan application form pdf' and the malicious URL, suggesting a phishing or scam lure. The presence of a large number of external PDF links also points to a link farm used for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?keyword=axis+bank+car+loan+application+form+pdf In PDF document text
    • http://tufutuba.kids-connection.net/uploads/1/3/1/4/131437930/04aa7b8b.pdfIn PDF document text
    • http://files.rusneftegaz.com/uploads/1/3/2/7/132712043/4891de6151d42c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5667/2418/files/2006_volkswagen_jetta_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2556/6365/files/47671790063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6192/2971/files/60273562136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/6587201871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2262/files/91998982021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f49ab61-d60e-4614-a781-d28774979225/77940429510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572b8f97-f7a7-4779-90e9-10ceee9b2414/gijatok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2052/8034/files/jalesuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7332/0613/files/chicago_manual_style_16th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/25838966637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/nukikifedebekavu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5C 5564 bytes
SHA-256: c740da1f42bb72f548d28ba7fbfa5ca79dde6a1c862dded87bf9549b0a33c869
font_01_sfnt_off00007034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7034 10048 bytes
SHA-256: 6311c36832733bba29e1277b676e56eb2fe0f89066de8a71f525f98360fb7a29

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