Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4e078599c57b0c…

MALICIOUS

PDF

67.8 KB Created: 2020-09-06 01:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b088026461bbfc94ab1ef02c28e5b915 SHA-1: 4c28607672664c8552fd315a3cbc27677cd2529f SHA-256: 3d4e078599c57b0c510e8038a5dfaf945d945d30e0cab398b17ba01b16de02db
150 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.club, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the same URL and keywords related to 'bedside alarm clock android', suggesting a lure. The presence of numerous benign-looking Shopify links is a common tactic to disguise the malicious redirector among legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=best+bedside+alarm+clock+android
    • https://cdn.shopify.com/s/files/1/0435/3851/4071/files/modified_alvarado_score.pdf
    • https://cdn.shopify.com/s/files/1/0438/2549/6221/files/zucchini_cheese_sticks_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8123/files/fhwa_report_bridge_deck_drainage_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/15689250735.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/wire_gauge_current_rating.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/ponakulixorur.pdf
    • https://cdn.shopify.com/s/files/1/0429/5403/1270/files/bhagavathi_movie_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/13629403353.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/statistical_methods_by_s_p_gupta.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/22385141328.pdf
    • https://cdn.shopify.com/s/files/1/0452/1564/5856/files/76509095096.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/masipapewobalerojaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/mugedofijezotajixivixinax.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000d518.bin
1de0e56c359eaff1dd1fcc89cbabc96a8fea9db2fd02cf1e34c770c2d93a3b0c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD518 24932 bytes
font_00_sfnt_off00009f85.bin
81823070b3d37150eb5c53b7051b2df5c745714a499769a7a7a54684d9493fa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F85 5336 bytes
font_01_sfnt_off0000b196.bin
5838ab18f76881cac5cef11b55eb21a23d077e72995e16e14b8f1cd3aa7eace3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB196 10292 bytes