Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba141ff9200e64c…

MALICIOUS

PDF

35.0 KB Created: 2020-08-22 22:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39222bbc4afd0e5f7dee898263199e2e SHA-1: e8b9b47a27228656273ff21b591c3014e025d250 SHA-256: 9ba141ff9200e64ce476b8e7115e54e0e8d11440854a97d609e27c636df7e782
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=instagram+logo+full+hd'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0431/6885/8276/files/jigubuxegezire.pdf'. The presence of a 'download button' heuristic further suggests a lure to trick users into clicking the malicious link. No scripts were extracted, but the combination of a malicious redirector and a link farm strongly indicates a phishing or redirection attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=instagram+logo+full+hd
    • http://files.d-93constructionupdates.com/uploads/1/3/0/9/130969151/xawagapopipuxa_kilefupi.pdf
    • http://files.ewan-macintyre.org/uploads/1/3/2/3/132303068/foranozi.pdf
    • http://begizuw.lighthouse.group/uploads/1/3/1/0/131070420/6431301.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/jigubuxegezire.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/86672717747.pdf
    • https://cdn.shopify.com/s/files/1/0459/2553/1815/files/cccam_emulator_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0310/0836/files/nesifijosunoloxul.pdf
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/61047094792.pdf
    • https://cdn.shopify.com/s/files/1/0461/7866/4602/files/vufiboru.pdf
    • https://cdn.shopify.com/s/files/1/0462/0134/0057/files/36882532077.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/pinavezagowazimagejivata.pdf
    • https://cdn.shopify.com/s/files/1/0431/5748/7778/files/kugatovupoven.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/85835494532.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_off00004d2e.bin
808d377bad4db908505dd04864354433dfcdd1ba64f4004aeb0e884608ee8f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2E 5256 bytes
font_01_sfnt_off00005ed8.bin
bd2bcbbaddb6ebd778d2beb23a1c30aeaf18b38ac6850c18cc22899478cf2445		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED8 9596 bytes

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