Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94a06cafe95faa1…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 16:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd4857fe343ceaf73ea446570476632f SHA-1: 20a68700adb76aa987320262d9db5136e2ea4d24 SHA-256: e94a06cafe95faa1409922739da4b3882edc854038d7a2bea78074146edfd0d8
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with SEO link farms. One critical finding indicates a direct link to a known malicious redirector, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains a URL that appears to be part of this redirection chain, disguised as a tutorial download.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ansys+spaceclaim+direct+modeler+tutorial+pdf
    • http://files.sarapretelliphotographer.com/uploads/1/3/0/9/130969403/2425128.pdf
    • http://kamawiz.frostwoodinteractive.com/uploads/1/3/1/8/131871505/7067289.pdf
    • http://samef.prestamoscreditoetc.com/uploads/1/3/2/8/132814194/vusizunelobumo-varaser.pdf
    • http://files.cherishedrubies.com/uploads/1/3/1/4/131454505/wabusetexopunaxut.pdf
    • http://files.rachaelbabington.com/uploads/1/3/0/7/130738996/8783888.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/avesta_persian.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2974/files/43408659964.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/cahier_de_charge_d_un_site_web_dynamique_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/cheat_codes_of_gta_vice_city_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7888/files/47138661734.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6463/files/denujemisopavaved.pdf
    • https://cdn.shopify.com/s/files/1/0430/7625/5897/files/kidifagaxexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5798/files/14834391460.pdf
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/44905489453.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/disenteria_amebiana_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/rutezapanunubut.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_off00005b06.bin
7d0baf7469b611fd88044de698958c6930311a1fead7320924632ccf7d1494d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B06 5272 bytes
font_01_sfnt_off00006cd5.bin
8dda5972773fcda364897073cefa897fda3e92c6d19770a38ad732d0e4860227
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 10228 bytes
font_02_sfnt_off00008fae.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAE 4324 bytes