Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cd275fe6c70e82…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 13:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c75b3dad94a7131d74964cfabf8ca23 SHA-1: 8c6097647bd7ba3de267bd1aac074ba1bcc65f68 SHA-256: e5cd275fe6c70e82b37c48f3970ae1e4d1bd5ca43db8139216344eaa6883c056
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, masquerading as a technical document, to a redirector hosted at ttraff.com. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further stages of an attack.

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=types+of+deep+foundation+in+civil+engineering+pdf
    • http://files.aroundbend.com/uploads/1/3/1/4/131437380/sufikuwonagorijula.pdf
    • http://medov.wildflowerartist.com/uploads/1/3/1/8/131857445/jepewufoka.pdf
    • http://fasek.tnpost289.com/uploads/1/3/1/4/131406390/6601373.pdf
    • http://files.professorsilverblank.com/uploads/1/3/1/0/131070366/4949526.pdf
    • http://nanamejuj.acornequalityfund.org/uploads/1/3/1/0/131070493/74947.pdf
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/kaplan_usmle_step_1_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/bilivemivagib.pdf
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/misadijadosebedukufemalul.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/5.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/84700432679.pdf
    • https://cdn.shopify.com/s/files/1/0434/8667/5109/files/lonely_planet_georgia_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/posudipixalevezogujere.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/57916716245.pdf
    • https://cdn.shopify.com/s/files/1/0454/4541/5070/files/brihaspativar_vrat_katha_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/40647025813.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/xinivuwoperevepeso.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2550/files/80417667834.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/36964791427.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_off00006efe.bin
51bdb75dca1570a9393dc62100b184ff63210410cbd845ae094f2f14bba1a4a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 5316 bytes
font_01_sfnt_off0000812a.bin
ed416330ecd12f4c3b4c85a0886979bb9f08c7aea87b366bc3780303f15db15d
pdf-font-stream PDF embedded font (sfnt) at offset 0x812A 9932 bytes
font_02_sfnt_off0000a323.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xA323 4324 bytes