Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ce79ad0c908e43…

MALICIOUS

PDF

42.3 KB Created: 2020-08-09 10:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 803ece37b6106edbd6aa351281802be8 SHA-1: 0fb8297ab3b6f3bacfd9d6313998e644e46f7403 SHA-256: b3ce79ad0c908e435cb8a653596fd2b73fdd64c2b154b7fa66bc584df8bae8ef
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as a 'used car buying guide'. One of the primary links, 'https://ttraff.cc/pify?keyword=used+car+buying+guide+pdf', is identified as a malicious redirector. The document's structure and embedded links suggest a phishing or redirection campaign aimed at leading users to malicious sites.

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.cc/pify?keyword=used+car+buying+guide+pdf
    • http://files.peterandrewsoam.com/uploads/1/3/1/4/131438453/rokib_sinepu_nufidanetobino.pdf
    • http://files.keeperswesternstore.com/uploads/1/3/1/4/131438059/redezofoluredaji.pdf
    • http://files.gcspatriots.org/uploads/1/3/1/1/131163943/xixefizesivawanidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/9245066444.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0435/9713/6030/files/bexexatuja.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/79464413298.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/50098009213.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/weluwajadata.pdf
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/gupifumegaxupubere.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/zeguberebulupudifuloda.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/acidose_diabetique.pdf
    • https://cdn.shopify.com/s/files/1/0431/6482/7805/files/turewetasoki.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/liwunoguwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/67923410868.pdf
    • https://cdn.shopify.com/s/files/1/0432/3780/2146/files/lijikuzeludapawi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6663/files/buscopan_comprimido_bula.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_off00006759.bin
1bdef5350371775541b4741fe16f6f93f39eb3642dd01a506c252aba247dc2ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6759 5524 bytes
font_01_sfnt_off00007a36.bin
e842704b55dfbe5522a4fddb603ddecb8bf4ab67489e1bcaa7ef6a12e10fc435		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A36 9972 bytes

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