Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4fdec63e7debf6…

MALICIOUS

PDF

49.6 KB Created: 2020-08-22 06:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e95a8b0687aba6fd1c996e70de0d6a SHA-1: 6fa334bcb5c06a18cc139fce54d92abb261f02b3 SHA-256: df4fdec63e7debf6d063d671b9fb3fd69c53e3073b3cab78782fc867e022fc69
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic fired, revealing a large number of embedded links, with the primary redirector URL being https://ttraff.ru/pify?keyword=the+world+game. The document body contains obfuscated text and a reference to the same redirector URL, suggesting the primary purpose is to lure users to malicious sites.

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=the+world+game
    • http://files.pound4poundathletics.com/uploads/1/3/2/6/132683137/1268049.pdf
    • http://files.increaseus.com/uploads/1/3/1/3/131384414/duwunifagosajoxag.pdf
    • http://files.domhawthornmusic.com/uploads/1/3/1/8/131872087/biken_letaku_linetin.pdf
    • http://sedod.drinkgreatteamarketplace.com/uploads/1/3/1/6/131607163/2847787.pdf
    • http://xifuv.denverchinesesource.com/uploads/1/3/1/0/131069839/fivazape-wonofalasosu-nofenibelisifu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8072/9251/files/timek.pdf
    • https://cdn.shopify.com/s/files/1/0461/3652/4953/files/bapcor_annual_report_2016.pdf
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/31083502209.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/spring_batch_3._0_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/maxade.pdf
    • https://cdn.shopify.com/s/files/1/0433/2594/8072/files/sowobilidudunofogom.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/jexonafejumozakumiviz.pdf
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/s._y._b._com_books_mumbai_university.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5224/files/extrapyramidal_side_effects_of_antipsychotics.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/louisiana_mandated_reporter_training.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/zivuzarukarekolebekinip.pdf
    • https://cdn.shopify.com/s/files/1/0451/0262/9016/files/baby_252brooms_252bpictures.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/xaxivenit.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/30266637170.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/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083bf.bin
9b219ab340548c8e42b1c6a2de34c9c0e0689abb4316a42a1fe9f26257d97579
pdf-font-stream PDF embedded font (sfnt) at offset 0x83BF 5104 bytes
font_01_sfnt_off00009507.bin
9ae5e842caba90a80583b6903669627edb86101ae4225685bc0bc54e7bc61666
pdf-font-stream PDF embedded font (sfnt) at offset 0x9507 10572 bytes