Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e48f4305dc715e5…

MALICIOUS

PDF

44.6 KB Created: 2020-08-24 19:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68b347c00c738b27606da30bbf9b33a2 SHA-1: aa6a3c9546c603adb8ab48d677779f366aea21e6 SHA-256: 1e48f4305dc715e57a6382e14227620a2a7e2dc2adafd42e5e7bd23f409b53ad
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=make+navigation+bar+transparent+android+pie'. Additionally, another critical heuristic identified it as a PDF SEO link farm, with numerous embedded links to various PDF files hosted on Shopify and other domains. The document body, though partially corrupted, also contains the same redirector URL and references to the document's apparent topic, 'make navigation bar transparent android pie'. This suggests the document is designed to lure users into clicking malicious links, potentially for SEO manipulation or to redirect them to further 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=make+navigation+bar+transparent+android+pie
    • http://files.nealpersoneus.com/uploads/1/3/0/7/130739498/1798032.pdf
    • http://files.doublemindedgod.com/uploads/1/3/0/7/130775137/1a730985498ebb3.pdf
    • http://dudew.anthonycrammen.com/uploads/1/3/0/8/130874308/pewaferigopilaz.pdf
    • http://files.goldeninnervision.com/uploads/1/3/1/4/131454255/7266876.pdf
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/dapigataje.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/85041792180.pdf
    • https://cdn.shopify.com/s/files/1/0430/1907/5737/files/nwa_dopeman_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/duxuxugemigamiwixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruketisoren.pdf
    • https://cdn.shopify.com/s/files/1/0432/8135/0820/files/26086987423.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/25370255669.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/kujipiwasoxevurij.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_off00006466.bin
ed7eefc7459343a94a387c2c3376acdfea48bb35bd9487fa94277b5796808d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6466 5364 bytes
font_01_sfnt_off000076b7.bin
f28578b927bdc65d22002a09b53817512860084bece78c87e0c69f82a037d7c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 15156 bytes

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