Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67dc9764983da65…

MALICIOUS

PDF

51.5 KB Created: 2020-08-20 23:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b35f8a1f4739bf719b1ff7ce6b6dd0f9 SHA-1: ef756f1deb849c5969590491cdf27c44f6922fe2 SHA-256: e67dc9764983da650dfc6f62c7c1297ee402ca560788477b5150d92274ff6694
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a direct link to a known malicious redirector at `https://ttraff.cc/pify?keyword=anand+shinde+bhim+geete+video`. The document body contains garbled text but includes the same redirector URL, suggesting the document's primary purpose is to redirect the user to malicious infrastructure. 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.cc/pify?keyword=anand+shinde+bhim+geete+video
    • http://files.4x4unity.com/uploads/1/3/1/4/131437981/3c3c76a.pdf
    • http://files.fireweedcoffeeco.com/uploads/1/3/1/3/131398093/d6a7c.pdf
    • http://files.tallahasseemetalroofing.com/uploads/1/3/0/9/130969045/lilijemewunakupite.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/munerofumadipobosefolexod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bewasovenajuwawofitef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/62153442166.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/74950364128.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/ugly_kid_joe_everything_about_you_tab.pdf
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/97745021036.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/jarunogozeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/11745786056.pdf
    • https://cdn.shopify.com/s/files/1/0431/2567/0042/files/kunedigijaramofupebozogos.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/55458860493.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedepisolutiri.pdf
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/58437412015.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_off0000838a.bin
cc347c067be87681b964e36c3ab6d65e27b6a6e47973ce33aff81a19f00ed42e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x838A 5300 bytes
font_01_sfnt_off0000956a.bin
7d3d15f7ac42d17e20adab96cb2254267f57483a1377134ccd5c1e1a2ab52e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956A 14092 bytes

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