Malicious PDF — malware analysis report

Static analysis result for SHA-256 36aa2ceca573e093…

MALICIOUS

PDF

40.7 KB Created: 2020-08-16 23:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 498a490857a129942204f01c2fe17b9a SHA-1: 278d4048798f340c340a174bf509f1d2db0a2213 SHA-256: 36aa2ceca573e09352bb02fed6ac9a816810d30b08c75b8a49bf0af7606295a1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=best+weather+app+android+south+africa'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The primary intent appears to be directing users to malicious infrastructure under the guise of a search result.

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.ru/pify?keyword=best+weather+app+android+south+africa
    • http://teduzuwew.new-york-reiki.com/uploads/1/3/0/8/130813528/a2d3723.pdf
    • http://files.forestheightsacademyofexcellence.org/uploads/1/3/1/4/131453989/23a3342ad.pdf
    • http://wugobotij.calicoband.com/uploads/1/3/1/8/131871787/bf365f762f36.pdf
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/mubegaporowafawo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6587/5359/files/35576346574.pdf
    • https://cdn.shopify.com/s/files/1/0447/5407/5799/files/imagenomic_portraiture_cs6.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/nafilexegewofumaf.pdf
    • https://cdn.shopify.com/s/files/1/0449/9626/4094/files/systme_digestif_anatomie.pdf
    • https://cdn.shopify.com/s/files/1/0431/5611/1520/files/xizopimabuluget.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/tesinifomunozad.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/totewogafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/braden_risk_assessment_scale.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/nevor.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/tetris_gba_rom.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/33913213392.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_off00006155.bin
a84c55fb59bb018baeb8430bda05d48dafe0689865da5e10b71cc7a85fcc8c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6155 5352 bytes
font_01_sfnt_off00007394.bin
97407a6d9253b60329cf5abce4d4bc9f381d17f9bf5469e78e14997137a704b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7394 9944 bytes

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