Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f7eb5592c56e39…

MALICIOUS

PDF

47.4 KB Created: 2020-09-04 07:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e865281333d9a20e2206e49c410ad5b5 SHA-1: 2a4baf165a038055f3b24d612c19a65477789eab SHA-256: 70f7eb5592c56e39d9fbd2b1115a97e3942d199d00991e8a11917fb5aeba7644
154 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'angular form control set date' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of many external PDF links indicates a potential link farm or SEO poisoning attempt.

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://ttraff.cc/wix?keyword=angular+form+control+set+date In 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://static.usrfiles.com/ugd/04e6f9_f0961169047a450283ed8a33db94caac.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_04d1f3a3380e4712b1ef075d87b1ab9a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cfa91a_060590a6fbc24011bab879457b69c97f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d4a9d6_7587d1eb2b1b4ece888d35a8c10f2ef7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/vabuwoxisevirarabudir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/bibliotheca_hagiographica_graeca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/pizaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/54630195151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/watoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1033/files/converter_to_jpg_software_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/fonojibimikesotiluzuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/newivasozalajuvogila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8417/5773/files/lic_all_in_one_apk_android.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_off00005ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE0 5164 bytes
SHA-256: b46109313c1f63477c2560e3d607b25c6d3bc8213809f56dff8704f6a0ae84fb
font_01_sfnt_off00007054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7054 16204 bytes
SHA-256: c646b8cbf09926ba4091fa9a46270def5070c1cb9b238fab99a283c3b254b3b9
font_02_sfnt_off0000a313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA313 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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