Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f177ba5f7a0c13…

MALICIOUS

PDF

36.4 KB Created: 2020-09-16 20:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01f2cbe2f7de327072182f6181b6f957 SHA-1: c0c1fbdbe077dba90f102d7f30aafa596cf2ad7f SHA-256: 52f177ba5f7a0c131e7bfacd65d8c031ef8837469b4a77b242bd6268febf5f3e
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a search result for educational material, which is a common lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=prentice+hall+literature+grade+8+teacher%2527s+edition+pdf
    • http://files.inspiredfoodforlife.com.au/uploads/1/3/1/4/131453054/numigesopokibiw.pdf
    • http://pizijutit.blytntministries.org/uploads/1/3/2/7/132710677/cdbbc5b2718.pdf
    • http://files.guidesforjohnofgod.com/uploads/1/3/1/4/131437983/6762822.pdf
    • http://files.evbuilders.co.nz/uploads/1/3/1/4/131406348/6844621.pdf
    • https://faaae760-d238-46d1-bf01-67f78201d10a.filesusr.com/ugd/49f5ef_8ce7f4333682408684169d342f00d8e3.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/canis_lupus_baileyi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/pinoy_tv_replay_online.pdf
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/70506195086.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/71837050014.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3046/files/fejupijagejodibekikefevo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/kuwokinutitefovorumekog.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_off0000414f.bin
7f57ae78924b634ea5d1329aeba4fe9a3caee76fdb74cbcf33bdecaf82303433		 pdf-font-stream PDF embedded font (sfnt) at offset 0x414F 5528 bytes
font_01_sfnt_off00005409.bin
0cae2291a0b104e418c1bfc64048d90484874bdb12220d2311820433eb67037e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5409 10040 bytes
font_02_sfnt_off00007667.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7667 4324 bytes

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