Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d0bd2f8e027d5c…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 05:16:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff6fe773d1ecbb12e7166be18afef04e SHA-1: 4957385264b3d6aed0299310810919739171250b SHA-256: c8d0bd2f8e027d5c9c87b010116dee73073da6e86120032ab716a64a445f10e7
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 ttraff.com. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which are hosted on cdn.shopify.com. The primary malicious URL is https://ttraff.com/pify?keyword=bitzer+semi+hermetic+compressor+catalogue+pdf, which is likely used to redirect users to a malicious site. 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.com/pify?keyword=bitzer+semi+hermetic+compressor+catalogue+pdf
    • http://files.cswithwhitlock.com/uploads/1/3/1/4/131406234/zufanumur.pdf
    • http://files.dirfloortimecoalition.com/uploads/1/3/1/1/131164016/mebalefafigiso.pdf
    • http://files.fineartbyrachel.com/uploads/1/3/0/7/130775959/vumadolapabi.pdf
    • http://files.theadventureawaits.com/uploads/1/3/0/7/130775953/3651408.pdf
    • http://files.maggiewaltondesign.com/uploads/1/3/2/7/132740805/b730655c5.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1373/files/the_life_of_the_buddha_bhikkhu_nanamoli.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/38181479803.pdf
    • https://cdn.shopify.com/s/files/1/0436/7689/3334/files/76611261372.pdf
    • https://cdn.shopify.com/s/files/1/0432/4425/7442/files/xawibilej.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/kazofuzopafozodobowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/14949587414.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15518423203.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/6959710239.pdf
    • https://cdn.shopify.com/s/files/1/0440/0922/6398/files/wuxefetonapomeba.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/32570432375.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/18494316320.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_off00004f7d.bin
fe8e26815b518c96c6f85535f7f2a8b6ec3eb60f8feaa2bc8a220708aa034ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7D 5668 bytes
font_01_sfnt_off000062a6.bin
10c4c185415dab63ee496d56f1f6f22f51a0cf4046f8a800f9a82b598acff3e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 9308 bytes

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