Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82ba0a189b7e08a…

MALICIOUS

PDF

55.1 KB Created: 2020-08-26 15:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e59b66bd23b45354234f997ee146521 SHA-1: 1a7fc46264c0097866193d248847e09f8f801f51 SHA-256: e82ba0a189b7e08add4e49bacfc7adab9c6197db8760b8b776722011e5867ad2
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with a search engine optimized keyword. The document body, though heavily obfuscated, contains the same URL. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm to improve search engine ranking for the malicious content.

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=mackenzie+ziegler+net+worth
    • http://dexuta.greenorganicfd.com/uploads/1/3/0/8/130813143/c19ec3b7820.pdf
    • http://bowizisib.assetprotectwa.com.au/uploads/1/3/0/8/130874601/43c16997b9.pdf
    • http://files.veronicablight.com/uploads/1/3/2/6/132695755/kologanalovoxosiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/89961734335.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/4266803546.pdf
    • https://cdn.shopify.com/s/files/1/0453/8610/5000/files/best_bollywood_movies_websites_name.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/how_to_do_matrix_multiplication.pdf
    • https://cdn.shopify.com/s/files/1/0444/4710/5191/files/activador_office_2016.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/baraja_mnemonica.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/76813292023.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/catfishing_rigs.pdf
    • https://cdn.shopify.com/s/files/1/0430/7566/6073/files/alternator_external_voltage_regulator_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/zejadakazefivilezi.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/cpr_procedure_download.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009983.bin
7e519eb610f52627216bf4a3d808d4bfb83286a227f9a0514f5bf7fcbd522bb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x9983 5092 bytes
font_01_sfnt_off0000aaeb.bin
6238f9f0cfd43949522b9682bd83dafae28ff0143b71b70f338c8eeae9130574
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAEB 10704 bytes