Malicious PDF — malware analysis report

Static analysis result for SHA-256 8064e42519990065…

MALICIOUS

PDF

37.3 KB Created: 2020-08-21 19:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af3bd847cdebedbb4039acccddae0ff2 SHA-1: 36fc9bbb8bbf8e802e7e3f11f9b255d69667513e SHA-256: 8064e4251999006594c0ccdbf8dfc5ec554cbab2b023602ac55f669695fe7b0d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=double+sided+tape+sheet+metal', indicating a lure to a malicious site. The presence of a malicious redirector link and the sheer volume of links suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=double+sided+tape+sheet+metal
    • http://jotofopal.healdsburgflowers.com/uploads/1/3/2/3/132303307/ccfaf14e.pdf
    • https://cdn.shopify.com/s/files/1/0452/8999/6450/files/92635887801.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/malayalam_calendar_2020_august.pdf
    • https://cdn.shopify.com/s/files/1/0434/2215/4908/files/zutemexabifoluzesuxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/zemabowejomoxor.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1041/files/warobapisuge.pdf
    • https://cdn.shopify.com/s/files/1/0428/8439/9270/files/63488393050.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/demoveja.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/apprendre_l_anglais_grammaire_et_conjugaison_en.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/46306918723.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_off00004574.bin
1ae8f8a4b9ca3118d36cf373428317393414e68dd61ed49277658b9106f1c02f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4574 5020 bytes
font_01_sfnt_off00005683.bin
b2936cba4f14a1549c1147416d2e0d5bf87db15a96236070aeb798f922ff5e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5683 12140 bytes
font_02_sfnt_off00007ab8.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB8 4324 bytes

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