Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b9bf6d9fb7e3cd…

MALICIOUS

PDF

47.9 KB Created: 2020-08-16 17:58:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4893848817caca70726c2c240dec0a36 SHA-1: 5dbe855bed2a4b09078c1fc3f49f6e688439834f SHA-256: d4b9bf6d9fb7e3cd29852cfa85d6c857f4ef3afb37af5abcd9e21b6b499951d3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Professional quotation template free' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous PDF links indicates a link farm strategy, likely to obscure the ultimate malicious destination.

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=professional+quotation+template+free
    • http://bazenav.myapplecrisp.com/uploads/1/3/2/7/132740214/a502b986.pdf
    • http://nadaw.tulatech.com/uploads/1/3/1/3/131383982/muxewimotimoxu.pdf
    • http://files.oceanateachbz.com/uploads/1/3/0/8/130814630/bepopadedunaw.pdf
    • http://fagojarus.carinekeenanmft.com/uploads/1/3/1/0/131070302/jegatur-wujumituvugaxa-porow-zodavi.pdf
    • http://suteka.susieastwestcenter.com/uploads/1/3/1/4/131438216/rirusuworadero-xabipuganov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0911/3240/files/fadupelokowezuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/ogg_to_wav.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/rovimebujixejo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/nedutokurakewafovedajujo.pdf
    • https://cdn.shopify.com/s/files/1/0440/1476/4190/files/97820444328.pdf
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/milemuwesiwanowolufef.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/xipamuru.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/al_bayan_book_download.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
stream_005_off00009876.bin
b0fc5039f4903bcc98806e845b09fe25117fca2a92b2e1e865f8c0f5cb9362f8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9876 17548 bytes
font_00_sfnt_off0000657f.bin
d804711d93c9d991e46d36f7ca0c23fba808dcd1ae9350c573e0d16bba2e1729		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 5176 bytes
font_01_sfnt_off000076ff.bin
c0da2e14c85eb1cf33e57e561b6df6c57b9fc79a002ba03b830ac8290482d0d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FF 9804 bytes

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