Malicious PDF — malware analysis report

Static analysis result for SHA-256 bffb61979fc7a241…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 02:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0e346c2b9aa07f185ada18c234e62f2 SHA-1: d4811b3260f49717fcd430264926ff170ac0bf33 SHA-256: bffb61979fc7a2413f7e46d3b59aa145683f14b262ed9942f7f2ffbb2a50046a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at `ttraff.com`. This indicates a phishing or social engineering attempt to direct users to malicious content. The presence of a large number of links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content or to obscure the true destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=holidays+in+pakistan+2019+pdf
    • http://dakaxik.markcgarrett.org/uploads/1/3/1/0/131070374/lunafolimogadoruja.pdf
    • http://files.yashbangera.com/uploads/1/3/0/7/130738625/83486b04a35.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/79248595459.pdf
    • https://cdn.shopify.com/s/files/1/0435/9982/3016/files/functions_in_oracle_sql.pdf
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/used_car_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/solr_query_syntax.pdf
    • https://cdn.shopify.com/s/files/1/0435/2697/9739/files/midis.pdf
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/alvin_and_the_chipmunks_the_squeakquel_123movies.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/90726341735.pdf
    • https://cdn.shopify.com/s/files/1/0433/5307/9963/files/88563835022.pdf
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/vopipojefiriseda.pdf
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/manual_boss_me_80_portugues.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_off00005686.bin
3eadecceb62a651668f5dcb65c92f91c376e2775410e68370fcdd37284fa9aaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5686 5548 bytes
font_01_sfnt_off00006986.bin
5a45bdee4130cc78b37bb582c473e8108ccddbf662c0186a3a1c7b0f86c5fea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6986 14648 bytes

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