Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fad1cbbb79f2d79…

MALICIOUS

PDF

50.3 KB Created: 2020-08-04 03:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b398d5297b730a1fe94e54664102c3dd SHA-1: d4818097b9f8619e462af83843e63150353270a2 SHA-256: 3fad1cbbb79f2d79d4663248d5aa24272c1254089a0720fc2f6fb19f8dc4cf81
150 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 'https://ttraff.com/wb?keyword=databases%20pdf%20download'. This indicates a phishing or scam attempt. The document body, though heavily obfuscated, also contains this URL. The presence of a link farm heuristic further suggests malicious intent to distribute links.

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.com/wb?keyword=databases%20pdf%20download
    • http://files.laughter4wellbeing.com/uploads/1/3/1/4/131409498/5c9feef.pdf
    • http://files.geraldinefirequeen.co.uk/uploads/1/3/1/4/131453810/ranoromosisez.pdf
    • http://files.northeastinsulation.com/uploads/1/3/0/7/130776483/takolofi_waludamas_fufebinusune_liborexu.pdf
    • http://files.mosquitomaster.net/uploads/1/3/1/6/131606636/7449760.pdf
    • http://files.villalta-artgallery.com/uploads/1/3/2/6/132680974/nimanevorifej.pdf
    • http://files.mosquitomaster.ne
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/uses_of_bitter_leaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/11423692156.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/tuperuwapejusoruz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/53804769471.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/extract_m3u8_from_website.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/vakopisurasotamedime.pdf
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/4366441794.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/doxifanisopategoxobexix.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/kimulukubosoke.pdf
    • https://cdn.shopify.com/s/files/1/0430/0029/9683/files/gizugasim.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/hunger_games_3_kniha.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/lawaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/rixepelabakukenatesikof.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/sezavarolesapasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/92381608271.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_off00007051.bin
a5296fdef09d247b137d02b567a549f03ec8811f3716bcdc15219b4e00bcdd10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7051 4908 bytes
font_01_sfnt_off0000811f.bin
902a63df20af60aa63cebd10e03104c28aab8e753f3055339618e3cafc604e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x811F 14068 bytes
font_02_sfnt_off0000adaa.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADAA 4324 bytes

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