Malicious PDF — malware analysis report

Static analysis result for SHA-256 276e499da6a0944e…

MALICIOUS

PDF

54.6 KB Created: 2020-08-26 10:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abbff988c89510bad0c38987f810459 SHA-1: d6081815aecfb54e643fa5dff654c8c98b28e094 SHA-256: 276e499da6a0944e0b38d5667d397200892b9dee03650590be4a831ec1ffd989
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to disguise the malicious redirect. No scripts were extracted from this sample.

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.cc/pify?keyword=dia+do+campon%25C3%25AAs+boliviano+e+a+reform
    • http://files.independentauthornetwork.com/uploads/1/3/1/0/131071164/gamakufije.pdf
    • http://zoxem.threelittlepigsbath.com/uploads/1/3/2/8/132814439/filojotudokeleb_luvol_vulejefovuze.pdf
    • http://files.ppgcosmo.cosmo-ufes.org/uploads/1/3/2/7/132741555/ca0331bf6f4587e.pdf
    • http://kederixem.journeys4life.com/uploads/1/3/2/7/132710621/wenavazotukef_jizivixototut_wovesexu_dijigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/xujirixoxofuzunu.pdf
    • https://cdn.shopify.com/s/files/1/0459/8602/1543/files/expeditions_conquistador_character_creation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/final_cut_pro_x_trial.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/ethical_issues_in_journalism_and_the_media.pdf
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/colonic_diverticular_disease_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/good_rules_for_discord_servers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0326/files/41678224623.pdf
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/78354716583.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3469/files/80436336631.pdf
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/11764417021.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/golofilizedovegadibud.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0392/files/rorifomakolebaxefupal.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_off00008f8b.bin
be06a96b13c0df260ea491414a8839adb7ab0bdbc1359dfaeb3ad16ec849f57f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8B 5652 bytes
font_01_sfnt_off0000a26e.bin
13324b7c4c33eb2be4f4615bb5a343e4075c6edec3027ff6d3b7bd5bc6217098
pdf-font-stream PDF embedded font (sfnt) at offset 0xA26E 13276 bytes