Malicious PDF — malware analysis report

Static analysis result for SHA-256 c944f0ee9e9d37f3…

MALICIOUS

PDF

47.2 KB Created: 2020-08-14 04:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2a2bbe94609ed4defc875fc81f4af71 SHA-1: f21590cfc496028b0fe24ea442d7d477c2bf4559 SHA-256: c944f0ee9e9d37f3e13bad4511ce2563e1a3839c0c9fb0f10975c88227d4e26a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=the+way+i+am+song+video'. Additionally, it exhibits a PDF link farm behavior, with numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to this malicious site, likely for further exploitation or phishing.

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.cc/pify?keyword=the+way+i+am+song+video
    • http://files.ellibrodeespanol3.com/uploads/1/3/0/8/130874110/wupuzanisovuloxag.pdf
    • http://files.buildingbos.com/uploads/1/3/1/1/131163736/3e8053aaa8ac.pdf
    • http://wivagiwa.massapequahistoricalsociety.org/uploads/1/3/1/1/131164100/58829190bb2903.pdf
    • https://cdn.shopify.com/s/files/1/0438/4142/1472/files/blogger_template_creator_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/dobatitafutiretuko.pdf
    • https://cdn.shopify.com/s/files/1/0438/9427/6264/files/98168540451.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdf
    • https://cdn.shopify.com/s/files/1/0443/0757/9036/files/blast_furnace_details.pdf
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/81666815880.pdf
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/knowledge_of_accounting_principles.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/both_full_form_in_medical.pdf
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/bong_appetit_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/wings_of_fire_book_in_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9010/7815/files/de_finibus_bonorum_et_malorum_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/kukek.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/6787479180.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_off00006e96.bin
9f8e506808f14a89fe3d8c8fe4f311735b6a634fd7d25946141e27265da3028e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 5312 bytes
font_01_sfnt_off000080ad.bin
e6f14273eb40056bf1271e3e6b427ed0d75488b204d355d36c150da38fcc9ec0
pdf-font-stream PDF embedded font (sfnt) at offset 0x80AD 15060 bytes