Malicious PDF — malware analysis report

Static analysis result for SHA-256 35997546ad592478…

MALICIOUS

PDF

51.3 KB Created: 2020-08-11 03:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abee04f883fee65036e3cffeed739d0f SHA-1: b4304185cc59538d597ba534b5240cf5386b6511 SHA-256: 35997546ad5924789d0de63c484b3668efac77cd59305c6459b63ac9aa49fa33
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=lake+tahoe+hiking+map+pdf'. The document body, though heavily obfuscated, appears to contain the same URL. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=lake+tahoe+hiking+map+pdf
    • http://files.abetterwayrecycling.com/uploads/1/3/0/7/130775917/samogiterawuwobiza.pdf
    • http://files.tarrellrodneycampbell.com/uploads/1/3/1/6/131606603/e97454983fde73.pdf
    • http://lifotif.donaldhalemusic.com/uploads/1/3/1/4/131408899/681fa0e.pdf
    • https://cdn.shopify.com/s/files/1/0451/0393/9749/files/givalox.pdf
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/wesipiroruwakukoxuso.pdf
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/rozigavolowemax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/lepowoka.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/lotunufosexujumof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarozasupevukofapunaxovu.pdf
    • https://cdn.shopify.com/s/files/1/0445/3515/2804/files/gotham_font_css.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/14565287911.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5581/files/numosolobubapixagor.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/32037258488.pdf
    • https://cdn.shopify.com/s/files/1/0429/8876/5337/files/masonry_works_in_construction.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/11835511955.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/saxegipu.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/
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ba7.bin
fbc4b209ab3a2aae1e2106e50cb87999689fee7dd3acc11df0ef31b99659daef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 5156 bytes
font_01_sfnt_off00009d0e.bin
10524b96d6b203f1acbf08b95f097ac95a22a462f605ab40a4c4c6908e46f321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0E 10272 bytes

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