Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b16585bc807660d…

MALICIOUS

PDF

40.4 KB Created: 2020-08-22 02:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf5708375edf4e466f9c45000932f947 SHA-1: 5102dc1d6d8cdd81aaac315f7da020d560537cdb SHA-256: 2b16585bc807660d532c65fba87464eef116852818c1bef9d7151c377c58a0e7
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=crash+bandicoot+3+para+android+apk'. This URL is presented within the document body, disguised as a download for an Android game. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious.

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=crash+bandicoot+3+para+android+apk
    • http://files.majestichouseofprayer.org/uploads/1/3/1/3/131380029/rupakopezosoti.pdf
    • http://files.welcometoamyland.com/uploads/1/3/1/4/131437515/gepozatogulaki-kufefugaji-bevojavire.pdf
    • https://cdn.shopify.com/s/files/1/0433/1995/1513/files/david_bowie_discography_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/pest_control_procedure_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/argal_pumps.pdf
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/6970494836.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/pevitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/tasujotasan.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/90621539488.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/zegibiguv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/42854487380.pdf
    • https://cdn.shopify.com/s/files/1/0438/5544/6176/files/sintesis_de_acetanilida.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/canberra_institute_of_technology_annual_report.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_off000060bb.bin
c9e02b8669cffb06918e7980f0436b6c7d87696730e92862e7c5630e90f9876f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 5400 bytes
font_01_sfnt_off000072fe.bin
a40c3f2afed7c5807fb63db334d9e424217e12d64aee3ef5878c3b9ea9158cbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FE 9896 bytes

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