Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e3575201f8497e…

MALICIOUS

PDF

45.9 KB Created: 2020-08-10 19:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 770afadbd048c87f0e867668cdae5381 SHA-1: c5260cec0c77b871dd437da5b4b69831e7a2732e SHA-256: c3e3575201f8497eb3712c9580062a41a74b7231941896f9e310458b5dafdc63
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=b.+sc+mathematics+notes+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to disguise the malicious redirect.

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=b.+sc+mathematics+notes+pdf
    • http://files.bakerlg.com/uploads/1/3/1/4/131407315/7e264e22.pdf
    • http://files.kathymorrowstudio.com/uploads/1/3/0/7/130776601/jinupufizinirosega.pdf
    • http://bamavoz.sjcnl.ca/uploads/1/3/0/7/130776485/maxulivi.pdf
    • http://files.veniceconcertband.org/uploads/1/3/1/0/131070309/2510595.pdf
    • http://lebin.devizessteelsupplies.co.uk/uploads/1/3/0/7/130740072/totifirexawozop.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/64294050689.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3360/files/bye_bye_birdie_jr_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38804475130.pdf
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/fezibenoxoneruwebuda.pdf
    • https://cdn.shopify.com/s/files/1/0448/1817/0018/files/98582895088.pdf
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/45311663790.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/zapederagakutisepazeki.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/24771063960.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/kevanajiber.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72905654063.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
font_00_sfnt_off000063a4.bin
c73f63e40fcb8a0f440659334e76b4dbabad94d0741bda75e699398f96932b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A4 5136 bytes
font_01_sfnt_off000074f3.bin
e94006c5fcd0005de268c9a3d62f8d00ced796d9a590d5809cc7ea03956f2c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F3 12244 bytes
font_02_sfnt_off00009c3e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3E 4324 bytes

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