Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32895fde49bd28a…

MALICIOUS

PDF

74.8 KB Created: 2020-08-22 08:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfb059c90a48a9c6d617b923aaea4ac2 SHA-1: cc5129969122545df0396e6615deb9227f928dcc SHA-256: d32895fde49bd28a4c0bb2edb63d3e33598f6ea3e2c587eba0ca0c1b8f46fc68
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a resource for free website templates. The embedded URL leads to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The ML classifier strongly indicates malicious intent.

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=dreamweaver+ecommerce+website+templates+free
    • http://kakuguwoz.thomasnazario.com/uploads/1/3/0/7/130775166/dexokokemud.pdf
    • http://files.safetygradelicensure.org/uploads/1/3/1/4/131438641/gitisolisopek.pdf
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/raketudemutin.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/14978944880.pdf
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/adenocarcinoma_uterino.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/41568438059.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/discord_join_messages.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/minecraft_shrink_mod.pdf
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/90970250264.pdf
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/lambda_fortress_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/98527497521.pdf
    • https://cdn.shopify.com/s/files/1/0450/3742/0708/files/architectural_plans_for_houses.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/2074194698.pdf
    • https://cdn.shopify.com/s/files/1/0452/1807/0685/files/annalen_der_physik_17.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_off0000e770.bin
6270100214961dd2cb95ee6ad5b18a162afdf3b405b966aada410b5f2431801c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE770 5452 bytes
font_01_sfnt_off0000f9f9.bin
afac473c28e9c12ac35eca094862ccb199fd5041e319a257c8fbcb8e326ff5d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F9 10580 bytes