Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cd2522f897e12a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-08 01:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e270faa3beb981111508ac236ef5701a SHA-1: 362a420993a322206f3f87ff63a2e08886ff182d SHA-256: d3cd2522f897e12abe5b0a1be731894ce7937dae68481804d68f113121a01271
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, and another flagged the document as a link farm. The document body, though malformed, contains text related to 'picture prompts for descriptive writing pdf' and a URL that appears to be a redirector. This suggests the PDF is designed to lead users to malicious websites.

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=picture+prompts+for+descriptive+writing+pdf
    • http://files.rustedacresoaps.com/uploads/1/3/0/7/130739651/c69467c9af039.pdf
    • http://files.graffitiwgratitude.com/uploads/1/3/0/7/130738814/808e7b1556b9ad.pdf
    • http://files.emmashugs.com/uploads/1/3/1/3/131379832/zajaxidorilekuver.pdf
    • http://bikaz.durangorocks.org/uploads/1/3/1/8/131857920/4739321.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1964/files/pulubavawugemag.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/kizapuvibabigofiluvokif.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/drug_induced_psychiatric_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/bescherelle_la_conjugaison_pour_tous.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/85604782406.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/besoin_en_fond_de_roulement_calcul.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/16488566976.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/17314040201.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/fakuvugedigivubululif.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/rolemedulubesokaruzuneru.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/patojedu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/16222286287.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_off00005ada.bin
3c26dc2171fb38c63fbb991c96c01a5ef300736bbea3293e3bc8308d7869d1c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADA 5388 bytes
font_01_sfnt_off00006d35.bin
f0ad7bc3a16e52f5b3fa95d97f593ac709409658d5dde2faf9d107f57c38aab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D35 10444 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.