Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a4fc91e0d3d1f8…

MALICIOUS

PDF

44.7 KB Created: 2020-07-30 20:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84f2a890bc6c5d263d8bf3b74f1d3c3a SHA-1: 8fd426583bee7477491df62eb396cca76e749afa SHA-256: 89a4fc91e0d3d1f8d1ff93f5397cdcc0b4178e24fed2a23bf8b3fb8f922538f2
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, suggests a 'worksheet' theme, which is likely a lure. The presence of a link farm further supports the intent to drive traffic to external sites, potentially for phishing or malware delivery.

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=shading+techniques+worksheet+pdf
    • http://files.botanikaplants.com/uploads/1/3/1/4/131454766/ravawo.pdf
    • http://files.shopgirlcookies.com/uploads/1/3/1/6/131606186/62d7b18dcea.pdf
    • http://files.woodbinepubliclibrary.org/uploads/1/3/0/8/130814127/2f17f8f.pdf
    • http://files.botanikaplants.com/uploads/1/3/1/4/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/51931290759.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/worazesubumofudijif.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/95298300261.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/leteje.pdf
    • https://cdn.shopify.com/s/files/1/0428/5598/9404/files/vesozisome.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/98035543252.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/dafoliwanipepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2943/8370/files/56093611992.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0432/9527/7214/files/68130202654.pdf
    • https://cdn.shopify.com/s/files/1/0434/2844/6358/files/kozefavali.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_off0000701f.bin
21f72b40e71c614f2cb7b2063fb8375eef951bc191a615617e1260015c9b030d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701F 5652 bytes
font_01_sfnt_off0000834e.bin
6031e25d29ececc47853158b2a4509bf922293f0a0e82b4429b630f595d4c30b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834E 9968 bytes

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