Malicious PDF — malware analysis report

Static analysis result for SHA-256 43675204a01f9d18…

MALICIOUS

PDF

48.1 KB Created: 2020-08-18 19:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 328dd786712b680a986bc8a9c0308912 SHA-1: bf1ec567ab7a78831186bbd860caa7ccdfe7a90b SHA-256: 43675204a01f9d1808d0c0281157bf58b008b897a6f712d14875b3f124b17383
128 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests a link-farming or phishing attempt designed to lead the user to malicious infrastructure.

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.com/pify?keyword=android+auto+wireless+phone+compatibility+list
    • http://files.kaliberk9.com/uploads/1/3/1/6/131637701/9bec921.pdf
    • http://files.helguhlidar.net/uploads/1/3/0/8/130814475/678f8c5.pdf
    • http://files.helguhlidar.net
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/nulimovosibizarup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/89826201860.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/55409560475.pdf
    • https://cdn.shopify.com/s/files/1/0433/3010/9593/files/65693523544.pdf
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/wapda_jobs_2020_advertisement_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/vibipipivajegoxomosel.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/abbe_refractometer_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/pesinifepiwazidetaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/revit_tutorials.pdf
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/68864815541.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/92114994003.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_off00006f7d.bin
7aed8bda3bad210cce4f5def07ad3bb6ab3e7dc39b223fb9cd6d9104f7433fd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7D 5516 bytes
font_01_sfnt_off00008214.bin
edfb915815b8c7274df05f96f1b19ed72317bba8ed4b91e7e81f830bf3f418ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x8214 10272 bytes
font_02_sfnt_off0000a4f2.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F2 4324 bytes