Malicious PDF — malware analysis report

Static analysis result for SHA-256 942b54f79b75e166…

MALICIOUS

PDF

52.4 KB Created: 2020-08-06 15:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81fa4db7c2ec35aa6db52c200af8a86b SHA-1: 9347e915ae0c9364b445b45ce3bba239c065db49 SHA-256: 942b54f79b75e166eeceab48e5cbb42181daecf9ff14eedb9a99158bc8973682
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a link farm structure with numerous external PDF links. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to lure the user to a malicious site.

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=yasin+sharif+in+english+pdf
    • http://tasuxetuj.landusesustainabilityjournal.org/uploads/1/3/1/4/131453177/xawezadanuxuzu.pdf
    • http://files.peakhealthcaremaryland.com/uploads/1/3/2/6/132681336/9171175.pdf
    • http://files.saltandumber.com/uploads/1/3/2/7/132710679/d1811f6374028.pdf
    • http://files.rcoathletics.com/uploads/1/3/0/9/130969046/vagutanop_vibogudifojed.pdf
    • https://cdn.shopify.com/s/files/1/0428/3950/7100/files/nunodalusaxafizano.pdf
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/93043412828.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3935/files/bepebujupamuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/78925780030.pdf
    • https://cdn.shopify.com/s/files/1/0432/4435/5739/files/jutazexonulaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/pabijesojenuxavopasita.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/newamoferidazowar.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/88459209491.pdf
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/93280969711.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007895.bin
cb14482bdbb21a6fd024015fa2f676c51b7e0eccc962c35d660fa9b95c911dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7895 5264 bytes
font_01_sfnt_off00008a76.bin
13773e2f999245c74c83a3e4a68f7d8beca550a72d28abcaf09f1b1d6317e9bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A76 10780 bytes
font_02_sfnt_off0000aee3.bin
781ca405c7aa2c7449db0613083335e5171392e3710d31a920657b107fd00cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE3 16324 bytes

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