Malicious PDF — malware analysis report

Static analysis result for SHA-256 d521454d42f1c354…

MALICIOUS

PDF

113.3 KB Created: 2020-08-11 13:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff9ab08d224917cb42bb72e7ac7cad29 SHA-1: b0155454ee2de57ae36e91b9c8bbddcce0e783f0 SHA-256: d521454d42f1c35493a77ad2a9ce6044b64be4ff3dd493ec7dbf0eaebe501e68
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with a critical heuristic firing for a PDF link farm. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=vitamins+coenzymes+pdf', is flagged as a known malicious redirector. This indicates the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

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=vitamins+coenzymes+pdf
    • http://files.wealthynationinstitute.com/uploads/1/3/0/7/130739163/13d33.pdf
    • http://files.murliesmiraclegrowth.com/uploads/1/3/0/7/130776407/8191119.pdf
    • http://files.netlander.com/uploads/1/3/0/8/130813509/pakiferupoges_rebexij.pdf
    • http://noraji.classroomcanberra.com/uploads/1/3/1/4/131407995/wanekowutomutav-xobofozopomo-gebagufere.pdf
    • http://files.redriverretentionauthority.net/uploads/1/3/0/7/130776712/xukulimoguxal.pdf
    • https://cdn.shopify.com/s/files/1/0432/1565/0980/files/goxavinatupadabuwulunum.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/87797605170.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/wefomelum.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/65472371285.pdf
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/gudusumusafubegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/wogexime.pdf
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/as_she_fades_abbi_glines_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/evento_cerebrovascular_isquemico.pdf
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/american_cinematographer_manual_10th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/0967/7224/files/majesty_delirious_chords.pdf
    • https://cdn.shopify.com/s/files/1/0429/4672/3996/files/tuluxakebaro.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/35901477908.pdf
    • https://cdn.shopify.com/s/files/1/0431/6751/4788/files/61909444312.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_off000173db.bin
d472128ed60690ad9b50fbf440b1cead938bcd3b3709f639bae503cbbb52845f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x173DB 5288 bytes
font_01_sfnt_off000185da.bin
69071475a289b5232b9f67d02e3872ae9191aee8a47e31b19f2640b8cde9911a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x185DA 16444 bytes

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