Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbeba56893224cd…

MALICIOUS

PDF

50.4 KB Created: 2020-08-19 10:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28f99825e35f3fe7171cacb4edfae181 SHA-1: e3c308c5c368df3f0b6040645591338207b42b72 SHA-256: 2dbeba56893224cd60268a278de70c9b733556e88b2666ff40d7d6943bdef55e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword related to Google Sheets. This suggests a phishing attempt to trick users into clicking the link. The PDF also hosts a large number of other links, many pointing to Shopify, which is characteristic of SEO link farm abuse for traffic generation or obfuscation. No scripts were extracted from this sample.

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=countif+google+sheets+not+working
    • http://files.globalcitymission.org/uploads/1/3/0/7/130740458/poxak.pdf
    • http://files.lisahassettphotography.com/uploads/1/3/0/7/130739022/xodaledi-xijuvuxeb-kedonujofik.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1003/files/20132428028.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/kakonilezatupekodafetarap.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/75789503111.pdf
    • https://cdn.shopify.com/s/files/1/0432/8833/0396/files/lic_jeevan_akshay_form_440.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/calculus_for_ap_with_calcchat_and_calcview.pdf
    • https://cdn.shopify.com/s/files/1/0451/7868/3541/files/el_abecedario_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/detaferopowi.pdf
    • https://cdn.shopify.com/s/files/1/0454/2195/3192/files/31729584119.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/esl_debate_language_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8172/8151/files/8765590799.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/candra_kirana_haruskah_berakhir.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8916/files/25886280147.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_off00007ecf.bin
0be4e3d16d68c38c9cbe454349981a312a3d1b7aca96d311a9894b6da8c3a142
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 4880 bytes
font_01_sfnt_off00008f7a.bin
b54def5af0e7e08e5a752643a64b54867e5c694512802303533474aacc09274d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7A 14312 bytes