Malicious PDF — malware analysis report

Static analysis result for SHA-256 8298ec598e15b1be…

MALICIOUS

PDF

43.3 KB Created: 2020-08-10 16:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 582580f133f5bf4d3b5c811d1306323b SHA-1: a0ac0ba3b3c1885826dd1fe35409978f471ec22e SHA-256: 8298ec598e15b1be3d50925d250d2e230563e8b558dec3f33ed1f5e9a07a8bb7
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to 'problem solving process in social work pdf' and a URL that appears to be a redirector. This suggests the document is designed to trick the user into clicking a link that leads to malicious infrastructure.

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.cc/pify?keyword=problem+solving+process+in+social+work+pdf
    • http://files.apostolicdeliverancefive.org/uploads/1/3/0/7/130775434/344824.pdf
    • http://files.birdsofmurrieta.com/uploads/1/3/1/4/131454505/ludipawijolud_wudejorave_lutexek.pdf
    • http://files.skinsonegin.com/uploads/1/3/0/7/130739404/b17ceb8b.pdf
    • http://files.andyprice.net/uploads/1/3/1/3/131378780/xudemiwe-ganen.pdf
    • http://files.gohillab.com/uploads/1/3/0/7/130739558/jutizaxotogolog_jedoviv.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/18602781104.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/47585973187.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/analysis_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/biology_research_paper_topics.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/nulojugugoxafid.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8172/files/anne_of_green_gables_novel.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/18506834684.pdf
    • https://cdn.shopify.com/s/files/1/0433/9521/9623/files/lalukufof.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/70009475292.pdf
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/non_parametric_test_spss.pdf
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/delonghi_air_conditioner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/dosavutakalelofuzodow.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/28597676467.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005edd.bin
bc715eb9104265ddaa2345394cc72674e5acbcf0267294010e2caa2b49c175f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDD 5832 bytes
font_01_sfnt_off000072af.bin
6d4cfcc952a012635c0b46a2ce616c6deaabc540b72653abbabcc76b969a16f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 14296 bytes

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