Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7a641e41cd57a1…

MALICIOUS

PDF

48.1 KB Created: 2020-08-23 20:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 530934ef48fe92999255f8fb0984e401 SHA-1: e770b6ed346f403e094c673ac759c5c3236572da SHA-256: fc7a641e41cd57a101ac2dd10aab645dffc09ced84b43507776380d0170136b5
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same product listing as the URL, suggesting a lure. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking and visibility for 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.cc/pify?keyword=carbon+fiber+sticker+sheet+for+sale
    • http://difejoxu.gregster60.com/uploads/1/3/1/6/131636917/a5099e4446.pdf
    • http://gipew.youthultimateprogram.org/uploads/1/3/0/7/130775583/wowarefevadufet.pdf
    • http://katid.letthemlearnllc.com/uploads/1/3/0/9/130969723/retava_pefiv_daroropami.pdf
    • http://files.s-jandhyala.com/uploads/1/3/0/7/130775953/8497883.pdf
    • https://cdn.shopify.com/s/files/1/0441/2620/8152/files/kubupaxovuvuxaga.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/side_effects_of_metformin_hcl.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/azhakiya_tamil_mahan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0695/files/70658939053.pdf
    • https://cdn.shopify.com/s/files/1/0439/1488/7336/files/puffin_web_browser_pro_apk_mod.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/wedavupimo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/mulokugowumesozepana.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/rovosijujasug.pdf
    • https://cdn.shopify.com/s/files/1/0433/8994/3975/files/18525359674.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4076/files/neriwigove.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/punovikive.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ada.bin
2618c9c01aecf529a51c55aa3ae8431d3bb96b4431b7ea902b56b8f461ec724e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADA 2948 bytes
font_01_sfnt_off00006559.bin
89e720722f918e27f0e670f582ff127adb9940eed5d88592bef38ecdd5c904f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6559 5080 bytes
font_02_sfnt_off0000769d.bin
b7efd7eeaa5cf85bc914df267e67515186cf5cdb78c3f62ce56a49c329e7c537
pdf-font-stream PDF embedded font (sfnt) at offset 0x769D 11352 bytes
font_03_sfnt_off00009da4.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA4 16164 bytes