Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a38a9a197615bd…

MALICIOUS

PDF

45.2 KB Created: 2020-08-03 07:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05b2717b36f5fb11b26a83d1ad5843b6 SHA-1: 174c96ae96f8d10c8be1debfe8a936e3504f9140 SHA-256: a0a38a9a197615bd651265fe17e0635ea0627ceff364d6b13dd209b9259edb49
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=volvo+xc60+manual`. This URL is presented within the document body, disguised as a manual, indicating a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on `cdn.shopify.com`. 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=volvo+xc60+manual
    • http://files.talbertsmaplefarm.com/uploads/1/3/1/0/131070688/19985d6.pdf
    • http://files.shopcedarcreekgallery.com/uploads/1/3/1/6/131606331/8bf621b4.pdf
    • http://files.bombersouth.com/uploads/1/3/1/1/131164314/a2e6ba493b.pdf
    • http://files.ballicotech.com/uploads/1/3/2/6/132682204/jixaketago.pdf
    • http://files.eljardinometepe.com/uploads/1/3/0/7/130776046/9568653.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/zetuwozezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5185/0647/files/catecismo_na_igreja_catolica.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/brazil_date_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/lomokabekumelumofutukofun.pdf
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/calien_soup_ark.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/92297952193.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/39907381441.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3462/files/94312198923.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/pobubud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xidegafizupewutuzu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/fofiragulamexiwisowepubad.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/xisak.pdf
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/woxowodufarujama.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.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_off00006771.bin
0cc171035366fd96cba4c4f7c8342d9347239ca426cd476354d6e8539beb1ad5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 4696 bytes
font_01_sfnt_off00007745.bin
6aa80c69ce46c909801ed3646ff8cab3d2604d3a0656068a87be23bb0646bd95
pdf-font-stream PDF embedded font (sfnt) at offset 0x7745 10048 bytes
font_02_sfnt_off0000999b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x999B 4324 bytes