Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e3f21eb122d61d…

MALICIOUS

PDF

40.8 KB Created: 2020-08-20 08:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77afdd7f1a01d6800eaa040660e8f2f6 SHA-1: dfb28a006cbd45abb86f8bb78eb4307df01deea5 SHA-256: 29e3f21eb122d61dc97acfafb5bb34b044992f4ab05f96c5592860cbfe879236
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and keywords related to 'Mcafee antivirus software', suggesting a lure to trick users into visiting the malicious site. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy, likely to improve SEO for the malicious redirector.

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=mcafee+antivirus+software++for+pc
    • http://files.perfectearthlandscape.com/uploads/1/3/1/4/131453198/3bf8fc.pdf
    • http://files.wakefieldperformingarts.com/uploads/1/3/1/4/131437423/b65388ebed.pdf
    • http://files.futureslps.com/uploads/1/3/1/4/131406701/dapomawukasuwupip.pdf
    • http://files.adamharrisfitness.com/uploads/1/3/1/4/131437295/nopufu-zetol.pdf
    • http://muwegej.youruniverseyoga.co.uk/uploads/1/3/0/7/130776023/fd065be16fd.pdf
    • https://cdn.shopify.com/s/files/1/0440/7807/1960/files/refraction_and_reflection_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/0930/8829/files/24705769232.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/the_cask_of_amontillado_by_edgar_allan_poe.pdf
    • https://cdn.shopify.com/s/files/1/0447/1137/9097/files/69112873916.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6361/files/30880111737.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/campaniform_sensilla_locomotion.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/pazexor.pdf
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/centrifugal_blower_maintenance.pdf
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/acuerdos_de_convivencia_preescolar.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_off00006204.bin
bfc34de92283a8c449a3251e0f376a692ec1fec0f8bba3ec518559823871c44e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 5136 bytes
font_01_sfnt_off000073a7.bin
4ace4f7b35a466c048d13a95fb2c0ba185f646a1f5de535def4f4d6ae06f84b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x73A7 10184 bytes