Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e97b315d748b531…

MALICIOUS

PDF

53.1 KB Created: 2020-08-23 22:37:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdeeaecb50fd33bd67f142ab7bedf65c SHA-1: c3e5577f7fdb9af8442ffc9b72ae0c839c145679 SHA-256: 3e97b315d748b53169254af175c4a09a8270ea86f28f6ff6207feb4c5f75d198
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with the primary link pointing to a redirector service. This suggests a phishing or scam attempt, likely to lead the user to malicious content or a fake login page. The ML classifier strongly indicated maliciousness, and the presence of numerous links, including a known malicious redirector, supports this assessment.

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=jabariya+jodi+movie++300mb
    • http://files.montoyamusic.com/uploads/1/3/2/3/132302718/zesuvi.pdf
    • http://files.countertopministries.com/uploads/1/3/1/3/131379246/migerujivesa.pdf
    • http://files.greenshoppepa.com/uploads/1/3/1/4/131453574/9002738.pdf
    • http://files.creadvocacy.eu/uploads/1/3/0/7/130740055/vejitu_romulam.pdf
    • http://xajid.ecclescenter.org/uploads/1/3/1/3/131383434/gubekarave-begide-bojigaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0956/4068/files/12125816317.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/va_form_21-_8416.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/90905434351.pdf
    • https://cdn.shopify.com/s/files/1/0451/1475/3189/files/silk_alessandro_baricco_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/96525551506.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/current_affairs_june_2018_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/25708345844.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/rowugipudajida.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/length_of_array_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6509/files/35912620627.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006822.bin
88d66560a02e69dc68832e0ee816602ac782a23b4713b4f141541cb57fe65717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6822 5436 bytes
font_01_sfnt_off00007a9a.bin
dcd71108a2c347247d56e17f02d8baf885d21e5380f1d2ffa67c54ee864ee94a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9A 10212 bytes
font_02_sfnt_off00009ddf.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DDF 16164 bytes
font_03_sfnt_off0000b330.bin
0f73b596adf635c42c9996214458c369b669d2b75adf85c1748787686806d26b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB330 5740 bytes

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