Malicious PDF — malware analysis report

Static analysis result for SHA-256 92331be46d74bc14…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 17:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a9c2a6522b3c67b330001584b63102b SHA-1: c9e99df975373e24db0d35a9b714191a0d1893b8 SHA-256: 92331be46d74bc145bb164bc481c3ca8fed8c01c378fcb71e9fa11b4efc6a33e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=alaska+bear+tales+pdf, which is likely used to obscure the final malicious destination. The document body is heavily obfuscated, but the presence of numerous links suggests a delivery mechanism for phishing or malware. No scripts were extracted from this sample.

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.
  • 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.
  • 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=alaska+bear+tales+pdf
    • http://files.wanderfultime.com/uploads/1/3/0/8/130874110/3712ea9ad197.pdf
    • http://files.littlelunchlove.com/uploads/1/3/1/4/131437701/sibewoguve_fagetewe_xopop_xinogoxokevo.pdf
    • http://files.bhseniorgolf.com/uploads/1/3/1/6/131606876/55387ad16.pdf
    • https://cdn.shopify.com/s/files/1/0434/2362/9477/files/59916281109.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0485/files/36168002791.pdf
    • https://cdn.shopify.com/s/files/1/0437/5012/9813/files/astrology_the_divine_science.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/business_ethical_dilemma.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/fapuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/feboruwojidujede.pdf
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/44381952739.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/18873878980.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/sinuluwijaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4044/8407/files/16313454942.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/sarasota_herald_tribune_circulation.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007228.bin
c42461560113d461603f9da9adb5fa6b3615360e29064bd4cadb637a2c34f3ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7228 5228 bytes
font_01_sfnt_off000083f9.bin
6bc5a0142bab506142c22023bdb1e42f7b594472e4528d2953ea7ac583524b65
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 10120 bytes