Malicious PDF — malware analysis report

Static analysis result for SHA-256 74508e44adb6ed07…

MALICIOUS

PDF

44.7 KB Created: 2020-08-04 23:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44b5e8a16a55614a273bf981a8e472dd SHA-1: faa83e6bbef3fa060576fa45cd21207e3f3838b9 SHA-256: 74508e44adb6ed075e233441835a5bc08e015de6567e246cc69db4714fb07202
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically identified as a redirector to malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=time+value+of+money+adalah+pdf', which is flagged as a malicious redirector. This suggests the PDF is designed to lead users to harmful websites.

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.ru/pify?keyword=time+value+of+money+adalah+pdf
    • http://files.youtrition.co.uk/uploads/1/3/1/0/131070912/5777101.pdf
    • http://files.secondwindcoaching.ca/uploads/1/3/2/3/132303175/virukaxivadowa_nuzop_zumujuxo_furewuv.pdf
    • http://files.rmcofcc.com/uploads/1/3/1/3/131381204/wunuxuzivozaben_varijitadedizop_fibago_galijol.pdf
    • http://files.wisdomboulevard.com/uploads/1/3/1/4/131453465/sufobelulosuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/getegofupaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5328/4519/files/sony_ericcsson_w580i.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5267/files/73763698217.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29480145432.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/fojujaboropipebavami.pdf
    • https://cdn.shopify.com/s/files/1/0430/2641/5779/files/does_antares_auto_tune_work_with_garageband.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/hmac_sha1_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/rf_to_eu_conversion_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0431/7875/4199/files/96980260649.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4592/files/tadurokariwatekale.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006273.bin
cc57d5161780649ca141491354527ee570d3094a378cf14b8d3a400e20ef4f4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6273 4920 bytes
font_01_sfnt_off00007305.bin
f0bb87bc2b340e68e6b807f49b27b91481a44dd14b3db0c75cceff45c002cf40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7305 10620 bytes
font_02_sfnt_off00009764.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9764 4324 bytes

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