Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffaaedd770051348…

MALICIOUS

PDF

34.7 KB Created: 2020-08-22 07:14:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 781e21cab1334e647d93bd5fedf5eb05 SHA-1: 51d4252eeb6f8eeb8e6a5d3161e3dbf95134223d SHA-256: ffaaedd77005134868e24bf4f08c1d62368fa4d94edc8f9234a96ae0460b27be
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com', which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=qradar+dsm+configuration+guide', indicating a lure to download 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=qradar+dsm+configuration+guide
    • http://files.hayletscommunicate.com/uploads/1/3/0/7/130776712/niguxuxasebu-sibubos-fuzadawumukow.pdf
    • http://vodix.ritasimonwedding.com/uploads/1/3/0/7/130739240/778d1f62efda4b.pdf
    • https://cdn.shopify.com/s/files/1/0444/1836/7654/files/vefasobir.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/wav__mp3.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/fozoditageravonubuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9170/5500/files/jupajez.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/17028204967.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdf
    • https://cdn.shopify.com/s/files/1/0429/0274/9347/files/writing_book_titles_correctly_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/fufibipijiporituw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/fernando_pessoa_poemas_de_alberto_caeiro.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_off000049e0.bin
a33975e3e5152a03f8f37ce5585eaca2de56e522953041f34a2b1bdffe89fb45
pdf-font-stream PDF embedded font (sfnt) at offset 0x49E0 5372 bytes
font_01_sfnt_off00005c03.bin
b6836fff898382cf22ba336ffc72002ee6395763287247bf471943a766598836
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 10032 bytes