Malicious PDF — malware analysis report

Static analysis result for SHA-256 34bdd8c4dbe988b2…

MALICIOUS

PDF

65.2 KB Created: 2020-09-01 00:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5adaaab434960bffb504c37375131f75 SHA-1: 7c30a4418f37de478c7d4d2c351707b1a92a64c7 SHA-256: 34bdd8c4dbe988b228ad2b93ab5df9113aa8c03dc0bfeff28e0c63c7003c7852
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=disorders+an+overview+reading+passage+answers', which is flagged as a malicious redirector. The presence of a callback phishing lure further supports the malicious nature of the document.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=disorders+an+overview+reading+passage+answers
    • https://cdn.shopify.com/s/files/1/0437/1628/0469/files/34476083390.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/mozubulotegu.pdf
    • https://cdn.shopify.com/s/files/1/0451/3264/4505/files/changeling_the_lost_second_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/acta_constitutiva_de_una_empresa_automotriz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/26848388655.pdf
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/nisawizexetijikadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/lusofijejevobodululixes.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/67166588279.pdf
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/audi_financial_report_2015.pdf
    • https://cdn.shopify.com/s/files/1/0432/8230/1094/files/gibamepigazepipug.pdf
    • https://cdn.shopify.com/s/files/1/0450/2149/5460/files/cover_sheet_meaning_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2297/4117/files/49822951859.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/juzomexapekaleveve.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/16525618872.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/62667944295.pdf
    • https://cdn.shopify.com/s/files/1/0428/7460/1635/files/12943794733.pdf
    • https://cdn.shopify.com/s/files/1/0440/6486/6469/files/makukagiduger.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_off0000c170.bin
9c1b08c6d9cd9f06c11984671bf575536885d2e6078da765651140f7560eba5a
pdf-font-stream PDF embedded font (sfnt) at offset 0xC170 5248 bytes
font_01_sfnt_off0000d375.bin
7338e221fa2c18a8217fd95b5308d32fb897f23862184344753b0fe1dc5ce25d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD375 10620 bytes