Malicious PDF — malware analysis report

Static analysis result for SHA-256 225873530d817d02…

MALICIOUS

PDF

41.5 KB Created: 2020-08-19 20:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eff745c4be460316564ec8ef4b1e2c3 SHA-1: ed1901e6feecec391fa5c874fc3c8f76c0ee832b SHA-256: 225873530d817d02ee488b66abbe45593d480f896d75305f5289c952c068f5e0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains references to the malicious URL and a seemingly benign PDF filename, suggesting a lure to download further malicious content. The primary attack pattern involves redirecting users to malicious infrastructure through a link farm.

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=black+spiderman+hd+wallpaper+free
    • http://fibuvif.tuckshopdancetheatre.org/uploads/1/3/1/6/131637562/nazabilexajojes-vakasolax-xupevisutome.pdf
    • http://ximabunow.friendsandneedles.org/uploads/1/3/0/7/130776647/9508598.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/kideruxopenimuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/mikhail_bulgakov_the_master_and_margarita.pdf
    • https://cdn.shopify.com/s/files/1/0430/6036/3413/files/zefezawexab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/9453355859.pdf
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/vumitojekuxawinalaledim.pdf
    • https://cdn.shopify.com/s/files/1/0437/8751/8104/files/fiposokasudubikekozep.pdf
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/busoterugumavisebuba.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/jemalijun.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/8385719234.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_off0000580a.bin
fb31fdd963ea1b9983e149c94931b94ef6811319246d6aaaa7229ad96f44e352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580A 5200 bytes
font_01_sfnt_off0000698b.bin
3e6e643a14556707257de0091335bf40f86ccfabe19b5cbd964de1870ed5a588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698B 9896 bytes
font_02_sfnt_off00008b73.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B73 4324 bytes

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