Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e91ed8154b8c01…

MALICIOUS

PDF

60.8 KB Created: 2020-09-06 00:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2410e346f56d608cfc5c58ef0df25f4a SHA-1: fc363a66d68e56fe7491d52e40cf1f676c22df9f SHA-256: 01e91ed8154b8c01cfd6e3c814f5fda2e99aabe4b2dd38f97cd16df194380566
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/pify?keyword=ap+calculus+ab+bc+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/76605478181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/mary_higgins_clark_novels_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2410/5124/files/rilapapoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/one_summers_day_flute_and_piano_she.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/3759/4524/files/fajoteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/58949755125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4747/2552/files/kumon_addition_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/kolebi.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/11baf9_9b8a84817b584f7db9e11668d0475f42.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/61b8bf_8318b69599034941b77228cffe74c007.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_bf2b371bcc72483caeeb6e56aeef2e0a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/03ae60_c28dbf61203a434e8b342cac0db316be.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1b7c00_0196f19a8a714d37b37921022fc1c98b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/24deb6_8be6c8d213c34e8393c185abc0e9921b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a421e3_e55404dd4db54a7eaec1cdca55fe4632.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7198c1_13a9d4b9d8754ce39ab36561539612a9.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A0 16336 bytes
SHA-256: 53338046581b0655f5c4bdeff144e5cdcbd474592c87de2bb78a085a9f37c311
font_01_sfnt_off0000a238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA238 4604 bytes
SHA-256: eb59119522d3c34fa5b34d2ce3c037dd75fab35031c4f226f51c6d1c852b9db7
font_02_sfnt_off0000b1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D1 10344 bytes
SHA-256: 3e8ba71f1a6ca8562ec73e4539f8286dc01a848a4be9608a167cf596feae615d
font_03_sfnt_off0000d537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD537 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.