Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ffffc4c5d5d0412…

MALICIOUS

PDF

41.4 KB Created: 2020-08-23 20:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 651f8f41f7ee1d6d334fe89addb095a2 SHA-1: ac561e6b74e084666475eae2985c81ff69570d9f SHA-256: 9ffffc4c5d5d041298694f413d6087695fab23f727ed48d2b3143dde373b5a84
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which are hosted on Shopify. The document body, though garbled, contains text related to 'cost budgeting in project management pdf' and the 'wkhtmltopdf' tool, suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=cost+budgeting+in+project+management+pdf
    • http://files.restorativejuveniledetention.org/uploads/1/3/1/4/131438571/ea989976.pdf
    • http://bufeme.bathnbloom.com/uploads/1/3/0/9/130969596/f79b3b4.pdf
    • http://files.journeytothemountain.com/uploads/1/3/0/9/130969983/87528.pdf
    • http://files.northcountytrees.org/uploads/1/3/0/7/130775373/2500782.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/1135100356.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/56728199713.pdf
    • https://cdn.shopify.com/s/files/1/0437/6012/4061/files/puvusanefeguvetun.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/weather_for_newark_de.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/30363164293.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/service_provider_agreement_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39748763391.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/55181003187.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/pitadatukoxixokotonemofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/negarisejolulim.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/93351590469.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/govolilikufusupedimu.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_off0000542c.bin
e55230a22dcc195c3b85d9ad3bb8ec489526103349b2b7a81f13368ca068a3e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x542C 5564 bytes
font_01_sfnt_off000066fc.bin
62e7602c5b66a55ec70c9d96981044573e55c8199e4b9b105e51802552185bf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 10460 bytes
font_02_sfnt_off00008ab0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB0 4324 bytes