Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5afc9ae080e3cc…

MALICIOUS

PDF

45.5 KB Created: 2020-07-27 23:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e47f6dd4af2222a707cfd9ab71a661c6 SHA-1: 7010bc8ee7d9d5467478bac787420b6fca5693fc SHA-256: ae5afc9ae080e3cc59dfc76eb746a563c9dfbfd1bf2622fe79dc51aaaa1d49c0
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a link farm, indicating an attempt to drive traffic to malicious infrastructure. The presence of a 'download button' lure reinforces this. The primary malicious URL identified is ttraff.com, which redirects to a page related to Avery label templates. The PDF also contains numerous links to Shopify-hosted PDFs, likely part of a link farm to improve SEO for malicious content.

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=avery+label+templates+for+word
    • http://files.electronicpartsplus.net/uploads/1/3/2/6/132695870/gesep.pdf
    • http://files.wlschaska.org/uploads/1/3/1/4/131483108/4806719.pdf
    • http://files.thekissinglipsofamerica.com/uploads/1/3/0/7/130739678/wuputipinivop.pdf
    • http://files.businessuci.com/uploads/1/3/1/8/131871587/sibedivekomepajot.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/65330188565.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0431/9340/1501/files/6863029772.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/xidizosigexubusogepako.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fejekav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0436/2131/8818/files/54337885676.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/faxevixifoxadidokupu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/sogute.pdf
    • https://cdn.shopify.com/s/files/1/0437/7831/0295/files/zosaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/waxokizibozidum.pdf
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/welomera.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/pifazavexux.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/
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/xidizosigexubus

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072fd.bin
df98e58402f0a9fbb5e73d5ca29404489f91006e398d0e5100879295494afc3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x72FD 5204 bytes
font_01_sfnt_off000084cd.bin
d25f636de0bea11cbc2b3c2b5cbd2f433e78ecf2b4e4bd04758e7ff0ad14af5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x84CD 10380 bytes