Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadf0ed4007c0279…

MALICIOUS

PDF

37.3 KB Created: 2020-08-24 15:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 699e3916b36008505083a66c428ac98d SHA-1: 9401027a64dca3b9a73fba7d4945f2c528fbe908 SHA-256: dadf0ed4007c02790661747a06b316bb365ba181f12f785241287cbeebd72087
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=diwali+greetings+template+editable'. This URL is embedded within the document body, disguised as a Diwali greeting template. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

Heuristics 3

  • 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.
  • 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=diwali+greetings+template+editable
    • http://files.lisbonlighttours.com/uploads/1/3/0/7/130738881/715795e99411b9.pdf
    • http://guvibapiz.preservehealthcentre.com/uploads/1/3/2/6/132683014/lonupi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/15180661426.pdf
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/wow_classic_dungeons_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/wamexumugiko.pdf
    • https://cdn.shopify.com/s/files/1/0462/4400/3989/files/ad_free_web_browser_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4511/files/46253573372.pdf
    • https://cdn.shopify.com/s/files/1/0440/4084/7510/files/treble_clef_ledger_lines_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8519/files/38689797277.pdf
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/gasubebinulizoka.pdf
    • https://cdn.shopify.com/s/files/1/0437/4197/0583/files/used_unlocked_android_smartphones_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0979/files/81012476156.pdf
    • https://cdn.shopify.com/s/files/1/0434/4558/4033/files/41167615625.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_off00005375.bin
a7871c5a463bf9a4a50a62daa2904a0d4f69664bdd7473822b51468c20c0b8eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5375 5512 bytes
font_01_sfnt_off00006620.bin
5ea6a247a29f8244ac59440705781a5fffa7ec218a9db0607740c04a76ec9c0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 10024 bytes