Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af5e29271b79f17…

MALICIOUS

PDF

38.9 KB Created: 2020-08-11 14:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bf240b49d64c4d6eb4a43317bddb5ba SHA-1: cbfbfad95fd708fe407d8bb540f66a52c02fb859 SHA-256: 3af5e29271b79f1789f3fe21cc20fe9dde6fd3fa74f4a0797ff9097a63ef2957
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. This heuristic, combined with the presence of numerous other links to external PDFs, suggests a link farm or phishing attempt. The document body contains text related to a 'Biblia de estudio diario vivir reina valera 1960 pdf', likely a lure to entice users to click the malicious link.

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.com/pify?keyword=biblia+de+estudio+diario+vivir+reina+valera+1960+pdf
    • http://files.halechannelvideo.com/uploads/1/3/0/9/130969548/97866183e2.pdf
    • http://files.triadsbesthvac.com/uploads/1/3/2/6/132696512/8450511.pdf
    • http://vesakejev.rahimaferguson.co.uk/uploads/1/3/2/3/132303195/bamod.pdf
    • http://files.adriennewalters.com/uploads/1/3/0/7/130739780/gozuboxetofafa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8247/1837/files/41027457243.pdf
    • https://cdn.shopify.com/s/files/1/0439/6387/5486/files/cause_and_effect_of_climate_change.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/tozijudam.pdf
    • https://cdn.shopify.com/s/files/1/0432/9521/1680/files/muxotowuwanoturof.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/burda_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/trastornos_alimenticios_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/6871/1321/files/degajaposuxawopoli.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/your_love_brandon_heath.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/93791019121.pdf
    • https://cdn.shopify.com/s/files/1/0432/8469/3160/files/50465988460.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0554/files/32627987422.pdf
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/ncert_exemplar_class_11_biology_solutions_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/james_rollins_torrent.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_off00005346.bin
b88f19fcc943fc6c378023a99db34ca33af92d78de17f5d7d5d875f93bdd5d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5346 5788 bytes
font_01_sfnt_off00006700.bin
d488ed197105f9655e5bf3ff9e06b2c4b7a16c90ff852185b6a4c559cdae0066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 11476 bytes

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