Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5dcdf98ccdb108c…

MALICIOUS

PDF

47.3 KB Created: 2020-08-17 14:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d17c9bd51819b236c8567ebbacd68cc SHA-1: 3d740305b78727b48a204e80bb212f4dadaf6ea9 SHA-256: f5dcdf98ccdb108ca163438fce4b441e1d979a5b5f249df6694ac74ba2f46079
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a malicious redirector link, and another flagged a PDF link farm. The document body, though partially corrupted, includes text related to an 'Ofsted report', likely a lure to disguise the malicious intent. The primary malicious URL identified is https://ttraff.ru/pify?keyword=avondale+park+primary+school+ofsted+report.

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.ru/pify?keyword=avondale+park+primary+school+ofsted+report
    • http://files.sandrapaolalopez.com/uploads/1/3/0/8/130813988/2511042.pdf
    • http://tagenum.monikalukowska.net/uploads/1/3/0/7/130739024/xonujezanilaneras.pdf
    • http://pobupeza.mayflowerfaces.com/uploads/1/3/2/7/132712062/4134874.pdf
    • http://rewikuso.outsidereal.com/uploads/1/3/2/6/132681352/bajona.pdf
    • http://tawefeva.professional-tourguides.com/uploads/1/3/1/4/131406149/bonokulam.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/84002264984.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/riranaferovotigisobo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/wajut.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/simple_present_tense_rules_chart.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/comment_attirer_l_argent_et_l_abondance.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/weather_underground_columbus_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/emerald_tablets_of_thoth_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/79899097623.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/69318986007.pdf
    • https://cdn.shopify.com/s/files/1/0435/2684/8661/files/tufodoraxunijetoju.pdf
    • https://cdn.shopify.com/s/files/1/0438/0311/5682/files/acta_constitutiva_srl_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/how_to_check_if_homebrew_is_installed.pdf
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/57606550914.pdf
    • https://cdn.shopify.com/s/files/1/0436/1368/3874/files/84951964427.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_off000064bd.bin
4b028ccb780407f0ecf4c3263479768b0b02e36f6bc3a96f0653f559b54f9228
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BD 5396 bytes
font_01_sfnt_off000076f8.bin
24d8639fe66473eaf4d2ee32dab18d6ca40ec00f5459e6552c899c202f0bdb34
pdf-font-stream PDF embedded font (sfnt) at offset 0x76F8 13192 bytes
font_02_sfnt_off0000a19a.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xA19A 4324 bytes