Malicious PDF — malware analysis report

Static analysis result for SHA-256 768a51da25787b53…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 11:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f11bcafce9ee7878b2dcc3947694fd74 SHA-1: 912cecb7cd41ba5b93514ea7022ba3c5a81b39f7 SHA-256: 768a51da25787b53082e277af71df067008bb41100148e04beb3cbdb59828c38
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, ttraff.com, which is flagged as malicious. The document body, though heavily obfuscated, contains the text 'Above average returns pdf' and the malicious URL, suggesting a lure for financial scams or phishing. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed to attract traffic or potentially host further malicious content.

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=above+average+returns+pdf
    • http://mekeme.indianagolfsolutions.com/uploads/1/3/1/1/131164250/sufomiloz.pdf
    • http://files.heatherhikes.com/uploads/1/3/0/7/130776674/pabunatox-wosuki-nuzesum-vogewiluwu.pdf
    • http://files.micahmcgivern.com/uploads/1/3/2/8/132814050/ripaw_dewebezon_niwimokegone.pdf
    • http://suter.startupsuccesspodcast.com/uploads/1/3/0/8/130874493/1749141.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1257/0787/files/zuzavubivopobatejubilaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3879/2085/files/zoxojibip.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/53545654374.pdf
    • https://cdn.shopify.com/s/files/1/0433/8558/5820/files/lazesopire.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5387/files/96331087206.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/49316771496.pdf
    • https://cdn.shopify.com/s/files/1/0439/5024/3995/files/approximation_theory_and_approximation_practice_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/aramaic_english_new_testament.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6918/files/assembler_des_ensemble_mac.pdf
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/fermentation_process_in_biotechnology.pdf
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/lorili.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/pip_install_matplotlib.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/arnaldo_crdova_la_ideologa_de_la_revolucin_mexicana.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/ragasamemigirerun.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad3.bin
adc6f18eb1c189aa603f5850038d781e0d142bfa59b75b57adb5552966295e65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD3 5364 bytes
font_01_sfnt_off00007d25.bin
37748b832574445ad3a8610dd107d41fcbbfe17f21eea3c006d40b62b52cc02f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D25 9988 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.