Malicious PDF — malware analysis report

Static analysis result for SHA-256 011e23b5e91f3d3b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 17:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74ce4213497298b1571559a3d6fbd08a SHA-1: 82638805a46e6e4f38bba60c59df07183ad33d6b SHA-256: 011e23b5e91f3d3b8eada191ef14e3dc6a510a0f067ebd5af755275a324c46d7
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The primary malicious URL, https://ttraff.com/pify?keyword=golf+scramble+flyer+template+free, is used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the golf flyer lure and the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=golf+scramble+flyer+template+free
    • http://miwetab.h2hclaystudio.com/uploads/1/3/0/8/130874457/2346916.pdf
    • http://bewide.laurapresley.net/uploads/1/3/0/8/130814328/tekebapizijur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2468/5976/files/75700665642.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/fumag.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8564/files/steps_in_conducting_a_survey_research.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdf
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/37252017669.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8538/files/wekesulozumetemaborit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/mesojazofudubasitonubiga.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/barigo_barograph_manual.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_off00005bd4.bin
36edcb7a9f6f0db4089c94f700ca102d69949d8fab4c29632ac01bbf8d6c7ec2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD4 5436 bytes
font_01_sfnt_off00006e41.bin
7188bed4998b844676312e0ebebb517eed9c0341e206844a8337cd9c8793e385
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 11248 bytes