Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ffb520451df5d32…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 23:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16a9db4896118801205e655fb470adf9 SHA-1: 35677a7c16f02390b0c2cec0cf133fd40ced495b SHA-256: 1ffb520451df5d328298450bd23fc290e08351b55530df20fa3ea5e120b209a9
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary link to 'ttraff.com' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Google play store on smart tv', suggesting a lure to trick users into clicking the malicious link. The presence of numerous other links hosted on 'cdn.shopify.com' and other domains indicates a link farm strategy, likely to obscure the malicious destination or to improve search engine ranking for malicious content.

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=google+play+store+on+smart+tv
    • http://files.storeofhopeministries.com/uploads/1/3/0/7/130739922/luwenasezodidewo.pdf
    • http://nerojuk.natureandyou.org/uploads/1/3/1/3/131383314/14722f940.pdf
    • http://vijolu.transportofyesteryear.com/uploads/1/3/2/6/132681670/5581.pdf
    • http://files.geeklectica.com/uploads/1/3/1/3/131383333/ce9b54323b2e.pdf
    • https://cdn.shopify.com/s/files/1/0428/2512/1959/files/37879777854.pdf
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/93560258888.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/fosewuxotodeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/vuludigutet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1408/files/aprendizajes_clave_secundaria_educacion_fisica.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/proper_noun_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejut.pdf
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/shielded_twisted_pair_cable.pdf
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/89107477207.pdf
    • https://cdn.shopify.com/s/files/1/0439/5368/4638/files/colibacillosis_pada_ayam.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_off000064a0.bin
02078380f3d8b29edebfeabcd5e63aefba4e31f2a5cca585622c2ddf5a53460b
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 5332 bytes
font_01_sfnt_off000076c5.bin
c9ee27590ba16b23d746d9d08b950cb2b58c6b3dc5c8ce508899e8fde2289d6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C5 10344 bytes