Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0eb1b09755e55ba…

MALICIOUS

PDF

45.7 KB Created: 2020-08-03 10:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04f40702883c72bb9df6b63aaa9d484a SHA-1: 293b7672c6b1826e3738ac2d23ebaeab778028e7 SHA-256: a0eb1b09755e55ba48647373ed734c19f0223653b0083aec63b46c3dcb342bb2
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=carrier+air+conditioners+manual'. Another critical heuristic identified a PDF link farm, with the first URL being 'https://cdn.shopify.com/s/files/1/0437/2178/5498/files/82983541490.pdf'. The document body, though partially corrupted, contains text related to 'Carrier air conditioners manual', suggesting a lure to disguise the malicious links. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=carrier+air+conditioners+manual
    • http://files.southernstylestudioandmore.com/uploads/1/3/1/6/131637055/jakugutiwikedo.pdf
    • http://files.hedytooropbloom.com/uploads/1/3/0/7/130739919/ad4c0.pdf
    • http://files.manhattanyouthballet.org/uploads/1/3/2/6/132695258/xosaribeduso-bilule-rifivuzomaso-vukedivobux.pdf
    • http://files.emanatepresence.com/uploads/1/3/1/6/131606256/koratovutisab-nuzadubusido.pdf
    • http://files.breathewithlauren.com/uploads/1/3/1/4/131437351/424db3.pdf
    • https://cdn.shopify.com/s/files/1/0437/2178/5498/files/82983541490.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/tewalonatus.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/12237886548.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/68591958587.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0229/files/sozun.pdf
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/fogewijaketexo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6165/files/juninuzibixi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/simizif.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/taxolovufinux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/matogarirekojekuw.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_off00006909.bin
f852e064e2b2cfa2b1d62ad7088c0dc30d6efc8747ca9ef25d1ead37133874e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6909 4992 bytes
font_01_sfnt_off000079de.bin
d5d2ccc42ae3313170e44f9821f928081eb612666c6ab08ab0cffc4909914b35
pdf-font-stream PDF embedded font (sfnt) at offset 0x79DE 10016 bytes
font_02_sfnt_off00009c1a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1A 4324 bytes