Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaebda1957de2c75…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 12:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d62a03f93cfcb70c4bd4bab9943e9827 SHA-1: a013bbd6f2b395bf8c5c13e46429d6d59e35195a SHA-256: eaebda1957de2c7591c715e59f96fb6539a91fe1130d79351dd6039b82b4bb6b
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body contains text that appears to be a lure for the malicious link, referencing a song video. The PDF also contains a large number of links to external PDFs, as noted by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to manipulate search engine results or distribute 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=gori+tori+chunari+dj+song+video
    • http://files.renewableblooms.com/uploads/1/3/0/7/130740596/gijomezalakex-jifuridulexol-zeweledo.pdf
    • http://files.pictonresource.co.nz/uploads/1/3/1/4/131409244/4306157.pdf
    • http://files.aaakkpsitbs.com/uploads/1/3/1/4/131438471/mixazaza-rekuluz-sufibowibeseko-padulagaduloguv.pdf
    • http://files.choicesarchitecture.com/uploads/1/3/2/8/132815388/musujemakeguji-jazokagubejeba.pdf
    • https://cdn.shopify.com/s/files/1/0435/7944/1307/files/rufafeko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/newefedapiforupif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/32946595070.pdf
    • https://cdn.shopify.com/s/files/1/0435/8111/2483/files/xuvupunubutevotagive.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/niliwitidobosutitidez.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4330/files/67421779686.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/kavisuru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0101/9548/files/baudrillard_postmodernism.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/32608676306.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_off00004c84.bin
01e50645472baae02876657b5b8ee752a797d84e7891a632db7f091f97fa4b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C84 5336 bytes
font_01_sfnt_off00005eb4.bin
284a82d85dde5533a5c385c43e675504c3c488d572dcde9dda5811316b99b9a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB4 12956 bytes
font_02_sfnt_off00008887.bin
0eeab0a0a6faa0915573e2160ed155a26e436edc3b5a048f0d32d83d1f0a4012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 3016 bytes

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