Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b051bacc005d0d…

MALICIOUS

PDF

49.3 KB Created: 2020-08-06 01:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b95f112a123ddd87f92fd6cfb00ef1ba SHA-1: 017362aa9a8620209fe54d3424be8fb3493c647b SHA-256: b0b051bacc005d0dcbe3d4e7fef00e909299f9f91392cb52660b2af773cbacca
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are hosted on Shopify and appear to be part of a link farm designed to improve search engine rankings. One of the primary links, 'https://ttraff.com/pify?keyword=weekly+job+newspaper+bd+pdf', is identified as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure through a series of redirects, likely for phishing or malware distribution.

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/pify?keyword=weekly+job+newspaper+bd+pdf
    • http://files.bonniejanedesign.com/uploads/1/3/0/8/130874284/4374740.pdf
    • http://files.uintahffa.net/uploads/1/3/2/3/132303163/5501645.pdf
    • http://files.candlesinthedarkness.com/uploads/1/3/0/7/130775025/gonavaviridovepevige.pdf
    • http://files.averagemanoncampus.com/uploads/1/3/1/1/131163833/3743098.pdf
    • https://cdn.shopify.com/s/files/1/0431/1924/7514/files/78648025212.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/git_remove_last_commit_from_remote.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/37220674575.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/39750589132.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/54391794486.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/sevidepovisubokaxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/osrs_earth_battlestaff.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/kaberuluxanige.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/org._apache._poi._xwpf._converter._pdf._pdfconverter_jar_maven.pdf
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/fuxosemamozosor.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/livewak.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/59544111840.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/54019966800.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/58002257002.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_off000064a8.bin
3c5e8f648f536bac670e1d6ae067c48ccffef0d1513b5c3b200fd6bb363c854e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 5524 bytes
font_01_sfnt_off0000779b.bin
538037a0dd0e51054f59a4e21519aa0e6254dfc97311c78360cbb0d7d4b6a0c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779B 9664 bytes
font_02_sfnt_off000095be.bin
2fd949c470cf6fca4a078f4ebd17ddfe36b75d3d0353dd6cb6b482ad16797d2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95BE 9872 bytes

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