Malicious PDF — malware analysis report

Static analysis result for SHA-256 84364343fbc7cf5c…

MALICIOUS

PDF

45.6 KB Created: 2020-08-03 17:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a495de86e624bf4a385d4c87e4bd117 SHA-1: 639756f500d93abeea1722db0cc50262dcf25c8c SHA-256: 84364343fbc7cf5ce853c4154ee92b7b3499941c0e7eeff89c710c07bf84c3cb
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=adam+smith+theory+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF filenames, suggesting a lure to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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=adam+smith+theory+pdf
    • http://files.wedaughtersoftheking.com/uploads/1/3/1/6/131606289/5108529.pdf
    • http://files.paulwoottenbooks.com/uploads/1/3/0/7/130776131/demimipofujug_retezuw_sexejejarikakaj.pdf
    • http://files.yourfitnesschloeshea.com/uploads/1/3/1/4/131406604/zonube.pdf
    • http://files.lukejohnsonart.com/uploads/1/3/1/1/131164016/949df65d51dd.pdf
    • http://files.mrstuckeysclass.com/uploads/1/3/0/7/130776841/4143467.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/zirupisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0426/3580/files/gezududogabe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://cdn.shopify.com/s/files/1/0429/8365/3527/files/bikedarevik.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/59886357504.pdf
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/59070640240.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/gafawanagenimonipujonuke.pdf
    • https://cdn.shopify.com/s/files/1/0432/6722/7811/files/86433157555.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0429/6087/9772/files/73877607199.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/vefexojomubofugob.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/sutogikefepetidud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/15373168674.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/werakofitiz.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075d9.bin
bcb33c2b0ce9583274211c03dca05771172fbe7287b0be4c8fdbe66cafe46029
pdf-font-stream PDF embedded font (sfnt) at offset 0x75D9 5340 bytes
font_01_sfnt_off000087e4.bin
6a26ffb96f95dd0f16d338e7065612905f51ac3cdef755349b854805ae8c68a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 9724 bytes