Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc041ce8c7d1014…

MALICIOUS

PDF

47.6 KB Created: 2020-09-16 18:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a49e27b95e2912579175acaabc0f5cb0 SHA-1: d0be688059fb4997b28f10731fc6b994d1e9910b SHA-256: 9cc041ce8c7d1014cee29a7ab7ddeae40e5f77330d58d685961665705f1752d6
150 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Scotch tl901 manual'. The presence of a link farm and the ML classifier's high confidence score further support the malicious nature of this document. The primary intent appears to be directing users to malicious websites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=scotch+tl901+manual
    • http://files.merrilywerun.com/uploads/1/3/0/8/130813111/mibugupamaruluv-bakirus-zoduw-zadosamare.pdf
    • http://fuletub.trinitywellnesscharleston.com/uploads/1/3/0/9/130969525/mobotumape.pdf
    • http://xidam.discoverplaybuild.com/uploads/1/3/1/3/131381521/gafez.pdf
    • http://files.goodhealthforgoodworks.org/uploads/1/3/0/7/130775970/d0ff07eac4a.pdf
    • http://ropuwa.radoslawrogoza.com/uploads/1/3/2/7/132740214/1650044.pdf
    • https://0e0f5863-8a77-44df-a4b2-9e58ff747e08.filesusr.com/ugd/3b6424_dbf8c3b533d64ab1b8defef36b5456e0.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/church_recommendation_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/21158178456.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/draft_compromise_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/algebra_2_exam_review_answers.pdf
    • https://97752b8a-c4fd-4c77-b139-10fa0e6641f2.filesusr.com/ugd/1e52da_f09bd9bc0d2d429cbc2e18255abd4ea3.pdf?index=true
    • https://fe80ece7-eca2-4818-bb37-e81f6dec4fd5.filesusr.com/ugd/a32c20_81f326238e0248c9ad3542569c60b7f4.pdf?index=true
    • https://fd8f06c5-d5ad-4d9e-9d59-55365033f04b.filesusr.com/ugd/6f5f23_8ac78ae042f5432ab5e843c0c4110b63.pdf?index=true
    • https://bb07f69b-ec45-43d9-9168-110807926a36.filesusr.com/ugd/e56fe2_b8c83f11eccf49368cd34d2ce7794882.pdf?index=true
    • 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_off00005a1c.bin
6f8b07fd7fd5c4da9b6b2d848e96e2e2924bb634c72f6940d9691ed4be350f33
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1C 5220 bytes
font_01_sfnt_off00006bc2.bin
8757609c8c37e61b93440821e0ba79cde116113e26a605bb803daa016fa88825
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 14968 bytes
font_02_sfnt_off00009a5d.bin
43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5D 16132 bytes