Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94d8d7bae225dfe…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 01:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a298e9c8d2426d3ea7e6822d6f34f9e SHA-1: 613b1cf10e439118c8f5ec233e0a39ea340f4e14 SHA-256: e94d8d7bae225dfed2cd3875dcdaf6e0700cd2a1e632740ebc89de5511ee5864
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=apa+writing+style+6th+edition+pdf'. This indicates a phishing or social engineering attempt, likely to lead the user to a malicious site or download further malware. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which are hosted on Shopify but some point to unknown domains. No scripts were extracted, but the presence of the malicious redirector is the primary indicator of compromise.

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=apa+writing+style+6th+edition+pdf
    • http://files.cikrefurbished.com/uploads/1/3/1/3/131398134/7703616.pdf
    • http://files.roros.shop/uploads/1/3/2/3/132302816/bopuvole_pajaza_tozurivologo_gubizupujamubod.pdf
    • http://tadewi.benefit.live/uploads/1/3/0/9/130969744/xedageju.pdf
    • http://katigu.jackcnissen.org/uploads/1/3/1/3/131383297/xosas_muvurabanejo_kunijitoge_kevub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdf
    • https://cdn.shopify.com/s/files/1/0454/8021/4678/files/black_s_law_dictionary_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/9769787942.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/96827121142.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/40832305364.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/14469593273.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/pesuduritosuwevemujuwor.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/2000_mercury_cougar_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/63780773566.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/forklift_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/xojofajaximuru.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007277.bin
609d1736e4e9dfc3a16a3159d523c7fd883409d9ab2854803c6ff35ce2c9d916		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7277 5640 bytes
font_01_sfnt_off000085b1.bin
5888b7f8d6d580b732f14470b9d93fb34a8a8e339490cb80936cc4b676e14094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B1 10308 bytes

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