Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf1886754baba633…

MALICIOUS

PDF

36.6 KB Created: 2020-08-02 03:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ffa6ccc9980bc940c7c9320d17b55dc SHA-1: 3f949108230c01dab5af0bb7aa6e29524df6e4aa SHA-256: cf1886754baba633b87467cb868492788c078aa4f793582ee07ff72282c452bd
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to an 'iphone 6s user manual pdf' and includes the malicious URL. The presence of a link farm heuristic further suggests an attempt to distribute malicious content. The primary attack vector appears to be a lure to click a malicious link disguised as a document download.

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=iphone+6s+user+manual+pdf
    • http://files.sabellalivingblog.com/uploads/1/3/1/4/131409309/tulipa.pdf
    • http://files.bjndasboard.com/uploads/1/3/1/3/131398131/vozaxivabu-vokewofozaxa-melux.pdf
    • http://files.elmontejunkremoval.com/uploads/1/3/1/3/131383305/kavimevuvexi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/84761717454.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/kixuxamonewizi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/wiroxos.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/what_does_yw_mean_in_text.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6668/files/43578186153.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/81501566795.pdf
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/22441575590.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/96184738747.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/vibera.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/murray_lawn_mowers_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/13081764416.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/fapulasojibalisumow.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_off000050f9.bin
180bd370b648ec1cd57081d8a53ae6cfd4eaf6792e3dbf464f2642068a6e272d
pdf-font-stream PDF embedded font (sfnt) at offset 0x50F9 5372 bytes
font_01_sfnt_off0000630e.bin
f5260170188598428e8e89f96a74d4052a736c9f3d34cee9920ab7ee8fd568eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 10208 bytes