Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd348fab114bd6f7…

MALICIOUS

PDF

57.3 KB Created: 2020-08-21 17:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46f9aa4076a2b4927fb3cfd43f09c492 SHA-1: df552e9f80eb9b0e8256d93bf1d8cc7ee40e53d8 SHA-256: dd348fab114bd6f78c1a546b0543a50c61aa36ee6754bfefb107c953bfae251b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a heuristic identifying it as a PDF link farm. One of the primary links directs to a known malicious redirector service (ttraff.com), suggesting an attempt to obscure malicious destinations. The document body itself is heavily obfuscated and contains the same redirector URL, reinforcing the malicious intent.

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/pify?keyword=tipicidade+formal+material
    • http://jelonow.highergroundbackpacking.com/uploads/1/3/1/4/131407226/rubituxeguwulo.pdf
    • http://files.donnablifecoach.com/uploads/1/3/1/3/131381363/virepaguwez.pdf
    • http://mebujule.newbornschoolhouse.org/uploads/1/3/1/4/131453215/5851f4155d.pdf
    • http://zekokif.goldenreiki.co.nz/uploads/1/3/1/4/131438304/dorebevofejinezeg.pdf
    • http://files.neuroactiveexercise.com/uploads/1/3/1/4/131413550/d2814f.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/lolovuxo.pdf
    • https://cdn.shopify.com/s/files/1/0450/3171/9070/files/canned_fish_processing.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/nipetuweso.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2650/files/zip_to_lat_long.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/accounting_golden_rules_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/vabani.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/mechanism_of_insulin.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/50392879365.pdf
    • https://cdn.shopify.com/s/files/1/0433/2011/5358/files/grammar_practice_workbook_grade_9_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/50927838848.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_off0000a1ed.bin
8f776ca229e24fbc97815efda994dd0d60e9060cbbadc58ac4bf305514c46274		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1ED 5072 bytes
font_01_sfnt_off0000b312.bin
f93d086f0bf72984a4934008381fe0296cf796c9297d535d2c6f55560d886b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB312 10924 bytes

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