Malicious PDF — malware analysis report

Static analysis result for SHA-256 45789859dd7c872e…

MALICIOUS

PDF

44.8 KB Created: 2020-08-01 17:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7908a4357d98385ab2240086cd84b134 SHA-1: d96f69aa0f9f89cdb02cda0a22d66ddb0774346c SHA-256: 45789859dd7c872e21e8486ff4b39862ce8873da1da408a708d89ce8aade0cda
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to create a link farm or distribute malicious content through numerous seemingly benign URLs. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adp+check+stubs, which likely serves as a gateway to further malicious activity.

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=adp+check+stubs
    • http://files.monroecountykychamber.com/uploads/1/3/1/0/131071295/ponerewesesaw.pdf
    • http://files.perockss.com/uploads/1/3/1/6/131606687/kagelajixe.pdf
    • http://files.anpslibrary.com/uploads/1/3/2/7/132740214/naxidamewosowuvogu.pdf
    • http://files.blowingoakfarm.com/uploads/1/3/1/6/131606289/mesisodepogozep-gotipulabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/givokavebirifi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/25945565842.pdf
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/netewunuwidewiwunuvig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/35502587491.pdf
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/zagolatatevoxomug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1314/files/59647791001.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/vogixulenax.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/zobalujewaxij.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/pimifikotelekotijeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/sujofotorobuputefese.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/4254063164.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/tiberefizegenitokevinu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/kim_heldman_pmp_7th_edition.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_off0000589b.bin
e69c7c3172bd4bfdccc9719b4307a287710a1476a81c08700819eae8f445e6d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x589B 5016 bytes
font_01_sfnt_off000069a7.bin
1ce5a771096465bd699dd5d5469869ffab3d4bc9954c99dc71de36df20ec74ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x69A7 10576 bytes
font_02_sfnt_off00008d94.bin
f4cfc27537a13e9f54ad8801d8be76c5bd079f2bc5e94e029bb931620d0a3cc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D94 17024 bytes