Malicious PDF — malware analysis report

Static analysis result for SHA-256 f904c5da9000eee4…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 20:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4637904e7c863fb9d7d23db1c32e328 SHA-1: 3942d9f5ccf25f5d05afadfaadf25ce3c5d3dd04 SHA-256: f904c5da9000eee4cbd54a8f1c652eba63d9e66558d8f3fa66532852eab2ebfb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=cara++video+dari+pinterest+di+iphone', which is likely used to redirect users to malicious content. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious links.

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=cara++video+dari+pinterest+di+iphone
    • http://files.bestillmove.com/uploads/1/3/1/6/131606016/zupekuxuduti_midusolajawoli_kigodukanon_ruwadibili.pdf
    • http://files.stewartsghinc.com/uploads/1/3/0/7/130739155/kobiguti.pdf
    • http://files.dunbarparishchurch.org/uploads/1/3/0/8/130814127/1289233.pdf
    • http://kaluxokuk.embracebotanicals.com/uploads/1/3/0/8/130874277/1907118.pdf
    • http://files.bizraeli-anglo.com/uploads/1/3/1/6/131606397/764548.pdf
    • https://cdn.shopify.com/s/files/1/0443/3005/7884/files/biochemistry_satyanarayana_ebook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/81637125934.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/duruvedetewerunekigoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/wuwuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/chemistry_12_formula_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/30868110.pdf
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/mivumiwetar.pdf
    • https://cdn.shopify.com/s/files/1/0432/1630/6344/files/rojonoka.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/physics_giambattista.pdf
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/taxegexigunoragunejeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5788/files/20333490938.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/98364597541.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/41600923483.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_off00006ad5.bin
11d58023035c234d8fb134beb7a02dd0496bcb95ee8268bad49d5d59565e587c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD5 4980 bytes
font_01_sfnt_off00007bc1.bin
fb5c041412b74e3d98bdbb740cc24836cfd7cd66ec855e9791e8813b489ab98f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC1 12396 bytes