Malicious PDF — malware analysis report

Static analysis result for SHA-256 e497951411f283f4…

MALICIOUS

PDF

43.2 KB Created: 2020-08-23 07:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce5f938db719b186fce27630d1481ce SHA-1: 15ed57c0e97863f5b37a63899ccb3906669ba967 SHA-256: e497951411f283f48d7624c822f0d305633c7cdbcec4a1f2d620054956e9c0d7
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc', identified as a malicious redirector. The document body text, though partially garbled, includes the phrase 'Phone call says answered on another device', aligning with the URL's keyword parameter. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates the PDF is part of a larger link farm, suggesting a broad distribution effort for potentially malicious content.

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=phone+call+says+answered+on+another+device
    • http://files.cckidsfamilies.com/uploads/1/3/1/3/131381539/9366823.pdf
    • http://files.heidijacobs.nl/uploads/1/3/1/4/131406275/fareli.pdf
    • http://dejizeli.theclinicfamily.com/uploads/1/3/0/7/130776167/b6714faec89b43.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/diwolilirososo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/android_play_store_app_icon_size.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/lojud.pdf
    • https://cdn.shopify.com/s/files/1/0458/5488/3993/files/excel_income_and_expense_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/7633/8335/files/adobe_photoshop_cc_trial.pdf
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/dojuwupitasotof.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/duzututufebifin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/ux_designer_portfolio_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/1161/9491/files/alphabet_pictures_for_each_letter.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/zapirosudapusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/76998730325.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/nevidopurajunamon.pdf
    • https://cdn.shopify.com/s/files/1/0432/7404/3556/files/jalirirubonilitugoxebug.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_off00006a11.bin
e9a74c07e4df61d0c477cdbf486b2350d09073d33fd45a5702a2362264be6ea7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A11 5284 bytes
font_01_sfnt_off00007c0a.bin
9aff9c2659f77a477c34ffed221ae0923fd766175b3ce0c6f4ddeb5e1715d2c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0A 10524 bytes