Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6ce24e4a5b4a4f…

MALICIOUS

PDF

44.0 KB Created: 2020-08-11 22:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556ebdf906474a95cc36847a5eb26b7e SHA-1: b647663956ac0e100a0785173804c4e1f480193b SHA-256: 1a6ce24e4a5b4a4fc7d541e92d22cd3ef27e5e4e45f5859398de9765bd697a59
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure for a 'free full javascript tutorial pdf'. The primary malicious IOC is the redirector URL, which is designed to lead users to harmful content. The presence of multiple Shopify links suggests an attempt to blend in with benign content, a common tactic for hosting malicious redirects.

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.ru/pify?keyword=free+full+javascript+tutorial+pdf
    • http://files.highalpinegenetics.com/uploads/1/3/0/8/130874587/4432502.pdf
    • http://dukipowen.peacejams.com/uploads/1/3/0/8/130814328/dalufulivase-dilezil-ximomitonule-kesufifafokewuf.pdf
    • http://files.maarer.com/uploads/1/3/1/3/131381614/16ad56719.pdf
    • http://files.metalicsafety.com/uploads/1/3/0/9/130969498/rurefuzupafujuv-kozaviw-tetovelajul-voroxo.pdf
    • http://files.firstmedicalprototype.com/uploads/1/3/2/6/132695575/vamatovej-zabojefimolen.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/86953990847.pdf
    • https://cdn.shopify.com/s/files/1/0430/5177/8197/files/synonyms_list_with_meaning_in_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3802/files/52777118781.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0431/4339/7525/files/walika.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9803/files/indesign_print_booklet_to.pdf
    • https://cdn.shopify.com/s/files/1/0452/2662/3133/files/the_curious_case_of_benjamin_button_activities.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/76484339051.pdf
    • https://cdn.shopify.com/s/files/1/0450/4292/5726/files/pathology_books_for_medical_students_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5041/8847/files/magalapikazusub.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/fable_2_siver_keys.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/wupop.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_off00006a74.bin
885b4cb3056fb1bc2a180b55259379c74b444ae6d4941b82cf5456cf0565f338
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A74 5240 bytes
font_01_sfnt_off00007c5f.bin
75f2c0a6ce7652158bac105bc7aff1e39f365ab3ad425861806a11a9b3a79715
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 12016 bytes