Malicious PDF — malware analysis report

Static analysis result for SHA-256 370cafc61c48a0d2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-14 04:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3305ce5a2dc80995f4d23424a52516ad SHA-1: 01c5748426ac62cb274395ba2b11656b51cc3fef SHA-256: 370cafc61c48a0d27d8b6a13afec0a222d1c1770cdd3d4d4930a680d37300e8e
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This redirector is likely used to obscure the final malicious destination. The presence of a 'download button' lure further supports a social engineering attack aimed at tricking users into clicking the malicious link.

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=starbound+full+game+free
    • http://files.ritchandyvette.com/uploads/1/3/0/8/130874031/e7786465.pdf
    • http://dazogipi.riversedgetownhome.com/uploads/1/3/1/3/131381204/8629264.pdf
    • http://files.mytriplec-boutique.com/uploads/1/3/1/8/131857540/doviwutel-famaz-piwiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1501/files/27282063031.pdf
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/26015455341.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/81278789727.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/kasisirirojusoza.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/shrink_video_file_size.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/26466519552.pdf
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/fofadekejarinonofufot.pdf
    • https://cdn.shopify.com/s/files/1/0440/7453/3014/files/17523964878.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/9720454618.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/xigikonutodusitifumulovi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/certified_management_accountant_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/8770/7812/files/12867395725.pdf
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/32189060469.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_off00006b55.bin
1d3ad4c864b22f61d43a841e420c861fb4aed91ea260b272e65070a9534b5899
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B55 5292 bytes
font_01_sfnt_off00007d37.bin
51b5cf343cc6b6f723925f09368914204468bf5a43b479b630905d665b60cb77
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 10408 bytes