Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ae1b33a22bb831…

MALICIOUS

PDF

53.3 KB Created: 2020-08-11 10:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 651c997a79751b21b255c9d5471831fd SHA-1: f3e67216df052ba0d13ea8f111ac9c4096e1bf01 SHA-256: 58ae1b33a22bb8317cf5caaa22efff84f7f74c3cf9bcc5f745ed84c030e5e77e
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=neural+conduction+and+synaptic+transmission+pdf', which is flagged as malicious. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing by overwhelming search engines with links to seemingly legitimate but ultimately harmful documents.

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=neural+conduction+and+synaptic+transmission+pdf
    • http://files.discoverysocialstudies.com/uploads/1/3/1/3/131379035/rewazaru.pdf
    • http://topodopo.askwiseguys.com/uploads/1/3/0/7/130740434/83841029aee1c3.pdf
    • http://jupijole.svtapatya.com/uploads/1/3/0/9/130969592/268a4.pdf
    • http://files.southernpointers.com/uploads/1/3/1/4/131437849/fipinowizudat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/62265175897.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/53000536415.pdf
    • https://cdn.shopify.com/s/files/1/0429/0369/9615/files/jonububodo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/audacity_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/87896655064.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3144/files/lodakesulupamibeziti.pdf
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/space_engineers_elevator.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/amendment_in_ipc_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/24235850621.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/metodos_anticonceptivos_inyectables.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/peramatabip.pdf
    • https://cdn.shopify.com/s/files/1/0433/9797/2135/files/99792483644.pdf
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/cbse_class_9_syllabus_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/30638690688.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/bavefifelekevufanosaku.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_off0000909b.bin
ea79cf4f3c76395e538529cc758b28a22ad4082ed9b45013622ac66716867290
pdf-font-stream PDF embedded font (sfnt) at offset 0x909B 5372 bytes
font_01_sfnt_off0000a2d7.bin
3cbf75fa460e7e0324a1ea39fdc5579f2b871676f002b940af5941c88c4a43a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D7 10080 bytes