Malicious PDF — malware analysis report

Static analysis result for SHA-256 911259438d2ece88…

MALICIOUS

PDF

50.8 KB Created: 2020-08-23 23:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14935817d77487064fccf87b8404e0f4 SHA-1: ebe6cc214e8d7177616450beb23e178cf9472bdd SHA-256: 911259438d2ece88b62b9fb21bdb2e1069c9af2bbf374c2c6f156ff3d16026f6
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to business reports and a URL that aligns with the advance-fee scam lure identified by heuristics. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the malicious redirector.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=business+letter+report+definition
    • http://files.jeffreymorabito.com/uploads/1/3/2/7/132712206/b799140f20a301.pdf
    • http://kexon.amywseelbach.com/uploads/1/3/1/3/131383679/6940375.pdf
    • http://files.csufdeptcomm.org/uploads/1/3/0/7/130776054/molobukedujetun-fusesigi.pdf
    • http://nutawefag.rochesterjiujitsu.com/uploads/1/3/0/9/130969054/xiginan.pdf
    • http://korok.2210enterprisedrive.com/uploads/1/3/1/4/131452883/koxejilom.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3026/files/61080015379.pdf
    • https://cdn.shopify.com/s/files/1/0436/1070/1981/files/89700074559.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/pourquoi_l_afrique_est_le_berceau_de_l_humanit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4601/8967/files/bapemisure.pdf
    • https://cdn.shopify.com/s/files/1/0429/1123/6259/files/dekanunatet.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/album_free_hip_hop.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/31925115973.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/leadership_theory_application_skill_development_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/jerewefirapinaxunoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/gamegedugegixixekefepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8954/9726/files/71205396351.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/nuzolabidepepogugibosox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb1.bin
b8c3bdbf06df30e6c615f21ddac38d71cec8f7b9a8b6cdda663dbddd1f862401
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB1 4756 bytes
font_01_sfnt_off00008ce5.bin
1d6b658c0c031ef1da37da42bd4704bac673b12936d9a00461e0bd74327a45ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE5 10336 bytes
font_02_sfnt_off0000afed.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFED 4324 bytes