Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00e03cc60a6531d…

MALICIOUS

PDF

38.6 KB Created: 2020-08-20 04:54:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d065b1a748fb941a2bae0344195efc0c SHA-1: bb8bf1cd58be3f85327b35c3bd99b5ec905cb3b0 SHA-256: b00e03cc60a6531d878c203627a2bf4ca74c2e0b290e3bf9a4bd35b2ff282641
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a Facebook video, aiming to trick users into clicking it. The document body and heuristics indicate a lure to a malicious URL, likely for further exploitation or credential harvesting. The presence of numerous external PDF links suggests a link farm or redirection strategy.

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=facebook+video+mobile+version
    • http://files.shoploveis.com/uploads/1/3/0/7/130775795/c681a95eab2e8.pdf
    • http://nopenus.neilmccarthypoetry.com/uploads/1/3/1/4/131406676/wizamizaguneju.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/cover_letter_for_an_unadvertised_job.pdf
    • https://cdn.shopify.com/s/files/1/0444/3389/9686/files/dictionary_english_to_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerisorajomowuba.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9845/files/manozujiwarazenijisutele.pdf
    • https://cdn.shopify.com/s/files/1/0434/2117/1879/files/python_website_template_github.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/dekugazezaxojuteriruga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/surojorax.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/gelanirabobonu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/wufegipabepozof.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/jagosagoniwamusamopus.pdf
    • https://cdn.shopify.com/s/files/1/0433/1021/9432/files/hernia_abdominal_perros.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1782/files/mekavomatukume.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_off00005adb.bin
9696b09864c9abb9b9792018d87f0e3dd716b7d802596a81d184c26cc5f52e66
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADB 5304 bytes
font_01_sfnt_off00006ccc.bin
6124d8c50f1e470fb07c46be67e299182c33fa78e418487ee68c1ea901504d21
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCC 9688 bytes