Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2df856e56937232…

MALICIOUS

PDF

43.5 KB Created: 2020-07-26 15:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 499d56ab4b75b0cb6c2c7d70a83035c3 SHA-1: 1d6eeaddc2a98e048fb9025b36e95f8581cdc8c3 SHA-256: e2df856e56937232ee09730568fe615d90063f2f84ae6c2655b99847364a0877
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'ttraff.com'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a mass external PDF link farm, with the first URL pointing to a Shopify hosted PDF. The document body contains technical terms suggesting a lure for developers. No scripts were extracted, and the primary malicious activity appears to be redirection via embedded links.

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.com/pify?keyword=devexpress+mvc+xtrareport+datasource
    • http://files.drkarimdajani.com/uploads/1/3/1/6/131637889/a121898b89.pdf
    • http://files.daniellewestdyk.com/uploads/1/3/1/4/131437236/ab07e48c.pdf
    • http://files.msdressersclass.com/uploads/1/3/0/7/130738548/rozapezidunip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/jijekaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/kimufeduruxalonixizom.pdf
    • https://cdn.shopify.com/s/files/1/0430/0642/7289/files/8760812280.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7113/files/22333356716.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/zolexelijizanivufiwetaxod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/novomavigilafavopowamurut.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/nebifuwovezusorefeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/rajuxatukukibareposokev.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/35481271722.pdf
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/54323173259.pdf
    • https://cdn.shopify.com/s/files/1/0429/8830/6586/files/93999436188.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/kemoxamefu.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/1/0430/0642/7289/files/8760812280

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a50.bin
4742a4cb4a6a62805972f068247fef2e9a6c778a18f9be023a42dced2958958c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A50 5044 bytes
font_01_sfnt_off00007b79.bin
aa781f894929111ff8600b426a468d1e38b40f745f98a69eea90945ee8db72e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B79 11044 bytes

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