Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0c2b9b1db5c026…

MALICIOUS

PDF

45.7 KB Created: 2020-08-08 03:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3875697d740ce879d05f73abd194c0f9 SHA-1: f12dab16695964705fb98427bc50f6a40dcc9836 SHA-256: 9e0c2b9b1db5c026feb38014a1b357f9ac0a330081b68dff481f1110c22c3ca6
128 Risk Score

Malware Insights

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

The PDF contains text and a link related to a 'Tax challan 280 pdf', which is a common lure for financial scams. The embedded link directs to a known malicious redirector, ttraff.cc, and the document also contains a large number of links to external PDFs, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. The primary intent appears to be directing the user to malicious infrastructure via the tax-related lure.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wb?keyword=tax%20challan%20280%20pdf
    • http://files.sebmakeup.com/uploads/1/3/2/6/132695361/sefejibogete.pdf
    • http://buzabulab.my-bizco.com/uploads/1/3/1/4/131453194/getusetinupiwi.pdf
    • http://files.stampoutcancernow.com/uploads/1/3/1/4/131483445/7560114.pdf
    • http://juror.eastonscoaches.co.uk/uploads/1/3/0/7/130776445/kasevera.pdf
    • https://cdn.shopify.com/s/files/1/0434/5993/6421/files/tibomivetuzux.pdf
    • https://cdn.shopify.com/s/files/1/0438/5092/4182/files/87631551128.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/27016320406.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/13542532213.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4602/files/pinekajapovewug.pdf
    • https://cdn.shopify.com/s/files/1/0434/4283/1522/files/nedemapolosomuwazuxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/37821563755.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/15825435442.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/temebolaratipagul.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/96526176674.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/duwapedugedawomodarul.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/62678910205.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/wild_magic_table_5e.pdf
    • https://cdn.shopify.com/s/files/1/0436/0051/1138/files/logejemewo.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_off000074ea.bin
b217fb9ea03e5922d59c889e933fd060f0d1bf66ed81e75ede5bcd1551d8667d
pdf-font-stream PDF embedded font (sfnt) at offset 0x74EA 5452 bytes
font_01_sfnt_off00008782.bin
d69afd99c1f79532d930e7f9122772d286668374b7dc261b9f5f56b0c8782fc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8782 10148 bytes