Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e35ab4456701bf…

MALICIOUS

PDF

33.7 KB Created: 2020-08-30 19:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b012bab42a44dc86c5ec15b7eaf53f10 SHA-1: b63dc151a29fe1f201f8516231336dc227220096 SHA-256: 17e35ab4456701bfe1b01a3a420989b587ace49da6780e8b7de21c34995b27de
154 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier as malicious and contains a large number of embedded links, including one to a known malicious redirector. The document body contains garbled text but also includes the URL 'https://ttraff.cc/wix?keyword=seadoo+pwc+parts', suggesting a lure related to parts or a scam. The presence of numerous links to external PDFs indicates a potential SEO poisoning or link farm attack, aiming to distribute further malicious content or manipulate search results.

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=seadoo+pwc+parts
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0631/9001/files/calorimetry_hcv.pdf
    • https://cdn.shopify.com/s/files/1/0447/4172/2263/files/advanced_engineering_mathematics_8th_edition_slader.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/ledukokakazodas.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/nokajujusekopumatuganopa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/53916643427.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
    • https://static.usrfiles.com/ugd/b916f4_385b20f4218f41dfb13180324fc6941d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bd8a78e42484b0187cfcc6f3640ee6e.pdf
    • https://static.usrfiles.com/ugd/b28561_8d2474470bcd4a0db72c5dcc89846025.pdf
    • https://static.usrfiles.com/ugd/37321e_974363a032cc4cf0a15e233107d76b58.pdf
    • https://static.usrfiles.com/ugd/625844_907f4f481b3c4470a89ca181641cf549.pdf
    • https://static.usrfiles.com/ugd/b8c837_abcf35407fab42aab17ac4e20d9a7c69.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044f8.bin
b286d3622df9bd06fd3c386f077fec2cff512a01f0073fa837aafda07584604c
pdf-font-stream PDF embedded font (sfnt) at offset 0x44F8 5228 bytes
font_01_sfnt_off000056df.bin
bc8ab007a6b86190114132d906116347a4cbd311ad0b79975563adf45ec69940
pdf-font-stream PDF embedded font (sfnt) at offset 0x56DF 10516 bytes