Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7aa466f70efc7ac…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 08:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81b1ae1bf24f850d6b2958ebcac833e0 SHA-1: 065eec978dfb4ec2ee574565467c60176bb90232 SHA-256: d7aa466f70efc7acc37387f1147d61b2aea22c570a259af8f825018fdb545381
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a high number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. The document body contains text related to 'building construction by mckay pdf' and includes the primary malicious URL, suggesting a lure to trick users into clicking through to a harmful site. No scripts were extracted, but the sheer volume of links indicates a strong intent to redirect users.

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.cc/pify?keyword=building+construction+by+mckay+pdf
    • http://files.ryanacademy.org/uploads/1/3/1/6/131637546/segidinoziz-xewexudapepij.pdf
    • http://files.shopfiorina.com/uploads/1/3/0/8/130873922/raxezop_wajatemokefatuf_wagudi.pdf
    • http://files.guadalupeestimatingandconsulting.com/uploads/1/3/0/8/130814769/pulalikagejidurava.pdf
    • http://files.alliguem.com/uploads/1/3/0/7/130776592/labobidixewelezuf.pdf
    • https://cdn.shopify.com/s/files/1/0438/7389/4555/files/lorain_county_dog_license.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6602/files/kepet.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/possessive_case_exercises_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0434/3493/4429/files/changes_an_anthology_of_short_stories_grade_12.pdf
    • https://cdn.shopify.com/s/files/1/0434/3771/9717/files/grammar_translation_method_summary.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/repinijefudozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/41839882764.pdf
    • https://cdn.shopify.com/s/files/1/0433/4020/2142/files/91939739865.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/dixup.pdf
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/kogedixopukogudemalufud.pdf
    • https://cdn.shopify.com/s/files/1/0443/0757/9036/files/onenote_ipad_annotation.pdf
    • https://cdn.shopify.com/s/files/1/0435/7256/0031/files/caballo_de_troya_2_libro_completo.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_off00005839.bin
21e203de257b8ec00c40276fe35a92f975a9e77dd3945ba5cb44d9b62ca5dbd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5839 5828 bytes
font_01_sfnt_off00006c03.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C03 2116 bytes
font_02_sfnt_off000075cd.bin
26eeeac5a679ddffcac43f1bb4ff493e84278792cf958eb282f747ae805a67f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 15676 bytes