Malicious PDF — malware analysis report

Static analysis result for SHA-256 069ecd89f15175ca…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 10:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a09a158643da2c86a52704f680f79a0b SHA-1: aee1f95b071430852998ccaa7d7ebcd46f0ed759 SHA-256: 069ecd89f15175ca103646265b83505d61678e2ae7f0078a74f3fef36b41e7d1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that suggests it is a template for a project scope statement, likely a lure to encourage clicks on the malicious links. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=project+scope+statement+template+doc
    • http://minasag.royalpawsmobilegrooming.com/uploads/1/3/0/9/130969723/cdb1701a236.pdf
    • http://files.salemcob.org/uploads/1/3/1/6/131636923/ab9135784ce44.pdf
    • http://files.foolsandhorses.ca/uploads/1/3/1/6/131606222/zusamewiladexemope.pdf
    • http://sapimike.sellmyhousefasthoustontx.net/uploads/1/3/0/7/130775734/lazadobexilo-denugasumozex-pogidor.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/vuzeka.pdf
    • https://cdn.shopify.com/s/files/1/0434/0200/2595/files/esl_reading_comprehension_pre_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/known_incorrect_srgb_profile.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6361/files/72154744295.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/79220039995.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/daily_use_english_sentences_with_tamil_meaning_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4995/0116/files/zenag.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7206/files/zelipiwosol.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/58938987952.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/tutufugepobufotuzomogeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/bijajaxekamewinapaw.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f6.bin
8f54a51190741553a6f4403778896aba0998928554034f27e703ec6f833119ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x64F6 5296 bytes
font_01_sfnt_off000076db.bin
ae77028f159291b988321b5b2c7acfb50c72803fc359acb9cb810c965806cdcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 9280 bytes