Malicious PDF — malware analysis report

Static analysis result for SHA-256 d04b2ea7c69e28e4…

MALICIOUS

PDF

58.2 KB Created: 2020-09-01 00:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4c6b1aa4e74b792412f49fe2719f1d6 SHA-1: a0462ce00c07a2b7b5f25a310d8eb96ef68c04fb SHA-256: d04b2ea7c69e28e4b434da75766e59fe668c105a92d8f350cae9f92010acdf2b
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains a reference to 'Camelot tv show' and the malicious URL, suggesting a lure for users interested in that content. The PDF_SEO_LINK_FARM heuristic indicates a large number of generated links, likely for SEO poisoning or traffic generation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=camelot+tv+show
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/sapelemafusolufiwul.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/66170083747.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/41661822674.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/24531862368.pdf
    • https://static.usrfiles.com/ugd/77eba6_75fdce74a58a49c5aa7cbca42fc9c1dd.pdf
    • https://static.usrfiles.com/ugd/9d66c7_419d020707fa428db94c8ed4d5fe6be3.pdf
    • https://static.usrfiles.com/ugd/9421c8_c904a595ce9344f285b12f569161db5d.pdf
    • https://static.usrfiles.com/ugd/6a7407_0e0573a8e7d4464e980a79fe775987d2.pdf
    • https://cdn.shopify.com/s/files/1/0440/7207/5414/files/kipuxulaviburevepi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/10127903822.pdf
    • https://static.usrfiles.com/ugd/e8506d_f046939456a84feab76696d049a1be09.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_e4508b8a151149068a24423ad6e4905c.pdf
    • https://static.usrfiles.com/ugd/cd79e3_ce2a0a839b274ca8aee27c2623d84f43.pdf
    • https://static.usrfiles.com/ugd/921909_e0f8ff9d46864ef69d039e5443908a08.pdf
    • https://static.usrfiles.com/ugd/221f3a_2b87c553e3bb4f6786a02f73d5def182.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_off0000a78f.bin
643b2f1dadbca1f3b9212853671fedd643612e0bf005150c76024e99d9c1d41d
pdf-font-stream PDF embedded font (sfnt) at offset 0xA78F 4888 bytes
font_01_sfnt_off0000b816.bin
3c5715bbe41caa95e2d0e3dd8ada024a2188f64cb06913665873f74392e24d1c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB816 10512 bytes