Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60882d7e0761f42…

MALICIOUS

PDF

43.8 KB Created: 2020-08-17 00:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3a48c59e26ada49fcfe5f031627688c SHA-1: 887496b583044965cbb93f70df31889da6d308b1 SHA-256: d60882d7e0761f42ffb44d390dce1e15789fb8b78290ee97002f535acf0bcc38
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier strongly indicated maliciousness. The document body text, though garbled, contains the URL 'https://ttraff.com/pify?keyword=spider+solitaire+win+7', suggesting a lure to a malicious site. The presence of a link farm further supports the attack pattern of directing users to external, potentially harmful, content.

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=spider+solitaire+win+7
    • http://files.angelsarmor.com/uploads/1/3/0/8/130873769/pirimesozim_junezigajema_bugirub_rubibo.pdf
    • http://files.fccchristopher.com/uploads/1/3/0/7/130775055/e74052aadc8ee.pdf
    • http://files.murciashoponline.com/uploads/1/3/0/9/130970001/wivilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4125/0714/files/girl_attitude_whatsapp_status_video_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/gizep.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/advertising_vocabulary_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/bugurakaluri.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/64674611232.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/wusinevavizivaxo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1592/7965/files/favasufenoruzikigavow.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/e5_a4_a7_e8_84_9a.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/rumaritofimevunit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/52240441003.pdf
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/pdf_file_reader_download_for_pc.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_off00006c6a.bin
8e0b04a662153caab69f3b9d3b3fdc367c4edf4ab4076e36c63c3341dce6c6c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6A 5228 bytes
font_01_sfnt_off00007e55.bin
acb975779f43ffc37ca051cf5f879f1b8607fad0ca9d80f44b855d6b726c3725
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E55 10640 bytes