Malicious PDF — malware analysis report

Static analysis result for SHA-256 978316cefa7c3c99…

MALICIOUS

PDF

47.3 KB Created: 2020-08-23 09:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f76eb348d23d9f481618272cde93ecce SHA-1: 48fe676d9feaa90b972591624168aab3a5e5905a SHA-256: 978316cefa7c3c993b30e5ad2b00deb5c976e190e4d6bb0fced89cf41e1de04a
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, https://ttraff.com/pify?keyword=bam+bam+bhole+song+ringtone, is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on various domains, indicating a coordinated effort to distribute malicious links.

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.com/pify?keyword=bam+bam+bhole+song+ringtone
    • http://sabetudu.mizunagardens.com/uploads/1/3/0/8/130814070/6651835.pdf
    • http://pasepam.andypresentations.com/uploads/1/3/0/9/130969521/8865056.pdf
    • http://files.david-jones-society.org/uploads/1/3/0/8/130814642/dixagululekivex_tekixomixe.pdf
    • http://tosug.dandrealab.org/uploads/1/3/0/9/130969592/bizaluv.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/lamoweregamifopivupaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/78326032712.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/dbz_android_14_15.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/ataxie_par_dficit_en_vitamine_e.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/writing_a_business_plan_example.pdf
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/club_atltico_boca_juniors_formacin_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/hadisa_afaan_oromoo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/saxegax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/xetowaxilovigikafu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/6309291945.pdf
    • https://cdn.shopify.com/s/files/1/0443/0381/0716/files/binary_option_trading_plan.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
font_00_sfnt_off000059a9.bin
9c71b2f3491e5a137288760121a1ef80519ae52e8e37e204088d0d708bdb74c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A9 5288 bytes
font_01_sfnt_off00006b80.bin
0ec8225ce43a9a8de6185c7b2a84b40d95d81e5718c213580d686e32088335bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B80 13196 bytes
font_02_sfnt_off00009536.bin
fd2d07e0f1707423df6f1e5172bc91ac385339eeee4c755ce0f6f355234dc126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9536 7948 bytes

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