Malicious PDF — malware analysis report

Static analysis result for SHA-256 7126e8f44496fe91…

MALICIOUS

PDF

46.7 KB Created: 2020-08-14 11:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e2f01f5e138241ca79b09b2cddf2b4d SHA-1: f9393078c7178b438056b95051adfda55269e688 SHA-256: 7126e8f44496fe91fac816f323edbab1e21605691d3fd19d41d96048050caae8
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure related to 'Minecraft chisel and bits'. The presence of numerous external links, many pointing to PDF files, suggests a link farm or redirection strategy to distribute malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=minecraft+chisel+and+bits+1.+12+2
    • http://files.vcbuilds.com/uploads/1/3/2/6/132682607/dapujugewevuvan.pdf
    • http://lilozolem.booneiowasoca.manriquez.net/uploads/1/3/2/7/132740930/xukabar-vugarewofuwa-jibikexitub.pdf
    • http://taxajod.clayranch.ca/uploads/1/3/0/7/130775432/86ced3cc0f45db9.pdf
    • http://nideri.thenewgrassroots.com/uploads/1/3/0/7/130776791/retixixasabamafose.pdf
    • http://files.sizi-photography.com/uploads/1/3/0/7/130740521/9673642.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/lagoto.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/mujelivonuvumavevot.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/robotech_rpg_tactics_rules.pdf
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/52220016774.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/fofaserelapekezup.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/business_plan_restaurant.pdf
    • https://cdn.shopify.com/s/files/1/0438/9987/9576/files/95787450790.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/51763617539.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/fepuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/40491993716.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/9561878261.pdf
    • https://cdn.shopify.com/s/files/1/0434/4243/8310/files/nagomewag.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/ladezonuvogenokaba.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061f2.bin
b422b6e28a9dd3f1707b2bf0f12a08ae88c6f1655bf1ef733bb7791591388023		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F2 5472 bytes
font_01_sfnt_off00007485.bin
55471cf477b058edec1104c6650c75d71303a69b9a199c15b44aa3602618f990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7485 10032 bytes
font_02_sfnt_off0000970c.bin
b2cf57f29eb3b5e0c174876c58b70ef8fadd81916e6e05a17acc225f9629e7e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970C 16064 bytes

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