Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28314f7c8263f6f…

MALICIOUS

PDF

44.4 KB Created: 2020-08-10 06:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f35833041a139a183556b1ae1c99a50 SHA-1: 7b21203d4147bd4735b62dca5c3d245b9f51b149 SHA-256: f28314f7c8263f6fd3749d5e20ba8d2c9636a9224e01d19b1386646019df30f6
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=pdf+file+reader+filehippo'. The document body, though heavily obfuscated, also contains this URL and a large number of other embedded URLs, many hosted on shopify.com, suggesting a link farm. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's text is designed to trick the user into installing software, a common social engineering tactic to facilitate malware delivery.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=pdf+file+reader+filehippo
    • http://files.christophertsmith.com/uploads/1/3/2/6/132682471/lotudise.pdf
    • http://files.allrequestdjdave.com/uploads/1/3/1/3/131384401/d31c26.pdf
    • http://kenoga.veldresienterprises.com/uploads/1/3/1/6/131606490/9163356.pdf
    • http://files.frictiongloves.com/uploads/1/3/0/9/130969944/tepujelegu.pdf
    • https://cdn.shopify.com/s/files/1/0452/7413/6738/files/aql_standard_table.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/boxisovavet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8646/2620/files/fafiweviw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7680/files/12590030125.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/bipojewobametumonoxofazo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/new_american_bible_catholic_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/bose_321_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/61889706208.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/mapabodifogobifo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2383/4011/files/conversor_metros_a_pies.pdf
    • https://cdn.shopify.com/s/files/1/0435/8415/9903/files/how_to_check_mysql_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/murigomosokoxobajeledin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/surge_arrester_types.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_off00007233.bin
04b8ebda76d7d96956c4b0331e7152b1493172bdb173f086a9d7f49d971cb5c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7233 4952 bytes
font_01_sfnt_off00008304.bin
6ac24ad3f3a2a67c3a69ecf78341ca796e9f72fb17407e4bf253b811735289b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8304 9776 bytes