Malicious PDF — malware analysis report

Static analysis result for SHA-256 93738e399ffa4210…

MALICIOUS

PDF

51.2 KB Created: 2020-07-27 04:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a6d105d3e7de6cf80bde6e7b9a836fe SHA-1: 6b14d5b8ccbc9c0ea0ff7a36cc3524c585cb0dd0 SHA-256: 93738e399ffa42105e5617b4777dcddeafabfda4c73c8233a969d5cb0a20fcc9
154 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm. Specifically, it links to a redirector at 'ttraff.cc' which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a movie title, likely serving as a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to distribute content or redirect users to malicious sites.

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/pify?keyword=banda+singh+bahadur+full+movie++hd
    • http://files.suigenerisjewelrydesign.com/uploads/1/3/1/4/131483955/d6a9cb9cbba3a8a.pdf
    • http://files.natureimprintedphotography.com/uploads/1/3/1/4/131438427/52b4869a85f27ae.pdf
    • http://files.manfredjantzen.com/uploads/1/3/1/3/131383921/rawij.pdf
    • http://files.billfishwio.com/uploads/1/3/0/8/130815058/5884541.pdf
    • http://files.billfishwio.com/uploads/1
    • https://cdn.shopify.com/s/files/1/0440/5172/6501/files/92028297469.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1786/files/tokomowewekepulolikaxevuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/vukomukipiramagazufo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7421/6351/files/detelubuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/neratusarifo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8846/2495/files/77249608893.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/11432138307.pdf
    • https://cdn.shopify.com/s/files/1/0434/4211/0625/files/gijemisi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/64540199891.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/ligoxini.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_off00008bca.bin
df1b2b0ca09c25529224f488c5c6501ede89974123a437a2f649556ef4841f1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCA 5372 bytes
font_01_sfnt_off00009ddd.bin
83d5e0d8b530c7bb523b378e15b2c9eabb7193c1c783324bf650983fdf877077
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDD 9948 bytes