Malicious PDF — malware analysis report

Static analysis result for SHA-256 0754f01ae38b65f8…

MALICIOUS

PDF

36.6 KB Created: 2020-08-19 17:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29184007f47e5cd99e66447beb631426 SHA-1: d1d21e1e4bff0c0bb475696773dc9eb4937142a4 SHA-256: 0754f01ae38b65f882e1c6b0b62cb4c7a5fc0ff9ace5b653ef61a6a5b0df1064
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious content. The PDF also hosts a large number of links to other PDFs, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL points to a phishing or malware distribution 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.com/pify?keyword=ancient+greece+map+quiz+pdf
    • http://jixub.gillianducaurroy.com/uploads/1/3/2/7/132710797/fuligakam-wavokaxowan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/8154/7428/files/coliformes_totales_nmp.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/98876524693.pdf
    • https://cdn.shopify.com/s/files/1/0451/6734/5818/files/43735561355.pdf
    • https://cdn.shopify.com/s/files/1/0439/3975/8235/files/22337431448.pdf
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/finodepofumunipagaxijep.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/bumidote.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/83450971014.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/babata_namak.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/sogagedimixinapawun.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/15541793032.pdf
    • https://cdn.shopify.com/s/files/1/0432/6975/0944/files/automatic_refresh_pivot_table_in_protected_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/68270722373.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004121.bin
8ce8185a489ec6e99dd1ea0a089f8408f4891b458322a84fa19ccdd29e95f0f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4121 5204 bytes
font_01_sfnt_off000052b1.bin
1ecec6386abda96c125b6d61919a3f05fec7e8ee8251713f6ba62efeda6ddcb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x52B1 10348 bytes
font_02_sfnt_off00007609.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x7609 4324 bytes