Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68712de1c524c9d…

MALICIOUS

PDF

32.7 KB Created: 2020-08-09 05:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d1f385a650eed04eaf9d88d6c88dfde SHA-1: 5595bb73bab49c57a5b70d20bbabc9f84eccaa37 SHA-256: b68712de1c524c9dd32cd59812dc92cc57ceee53dd4909aed4f601d7339709c4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is disguised as a career counseling questionnaire. This suggests the document's primary purpose is to redirect users to malicious infrastructure. 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=career+counseling+questionnaire+for+students+pdf
    • http://files.anncapewellceramics.com/uploads/1/3/1/4/131437937/kinobuneri_bojazolevev_monafak_tabisezuj.pdf
    • http://files.jwhitneyart.com/uploads/1/3/1/4/131406082/jupapuju.pdf
    • http://files.sundointernational.com/uploads/1/3/1/4/131453247/2642062.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapiguwidekedod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/lepajukalekos.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/suganatujod.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/mekuluxosowapetawujalaxam.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/8984823024.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/65999555723.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/kevagusigesazotoku.pdf
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/nigivizigavuzematifirevo.pdf
    • https://cdn.shopify.com/s/files/1/0441/1867/1512/files/pavlov_media_channel_listing.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1974/files/jebogopuzo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6939/9452/files/xelikudefubow.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/66435556864.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_off00004528.bin
18626ac90217ae11c8453e333ceaa204560aa3aa4bc1bc69382a48879d6f4072		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4528 5352 bytes
font_01_sfnt_off00005763.bin
4286bdf9cb25e1f2fbf882c9934d53b25dc1f55fee113991a358edb7de923eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5763 8944 bytes

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