Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc902d9f9f96d900…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 03:09:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eb05125887f09aba1db1a02dc6bab80 SHA-1: aa88ec1f79223879b6e9e7366935149a52f12bc6 SHA-256: cc902d9f9f96d90043eb1a53b7e1e56b6ab5babd08a0eb960356ad8833867d1b
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure for a background check form, directing users to click a link. This link, https://ttraff.com/pify?keyword=background+check+form+philippines, is identified as a malicious redirector. The document also hosts a large number of external PDF links, many pointing to shopify.com, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The presence of a malicious redirector and the link farm strategy indicate a phishing or social engineering attack aimed at users.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=background+check+form+philippines
    • http://takazepuf.sdesignsgraphicarts.com/uploads/1/3/1/4/131437850/7482775.pdf
    • http://files.jameswilmot.com/uploads/1/3/1/3/131398197/400816.pdf
    • https://cdn.shopify.com/s/files/1/0432/5831/4912/files/22603896907.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/jixekufufoxebigifukizara.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/70651245451.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/english_speaking_course_in_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0443/3536/6300/files/baixar_bncc_ensino_fundamental.pdf
    • https://cdn.shopify.com/s/files/1/0438/1969/6288/files/apotheosis_of_a_demon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/ludarexikuxijefawipowux.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/85065356228.pdf
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/79502917515.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2224/files/bikijutofazunepireba.pdf
    • https://cdn.shopify.com/s/files/1/0455/3798/4677/files/tijanafivetomusekuzikuri.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_off000061ec.bin
3d11c7b998747156e6fa9a343822085c56344e554eb3c42146545676ca8d3a16
pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 5684 bytes
font_01_sfnt_off0000751a.bin
1e60c7211e69971e920d48bd4a7e6929ccb0f36573ae00b0759a1ae3c2c624bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x751A 10700 bytes