Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a070beb2b85d296…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 22:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6a2ab39199c5d55577efe83c1c9ff3e SHA-1: bafe56a5ce9682edc049106f5a624f7279fcb391 SHA-256: 7a070beb2b85d296c94acba1f3ff0bd6acb108c25df92269e17c6295db480235
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector to malicious infrastructure, disguised as a Schengen visa application. The embedded URL 'https://ttraff.cc/pify?keyword=application+for+schengen+visa+pdf+spain' is a critical finding, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=application+for+schengen+visa+pdf+spain
    • http://files.bwanasafaris.com/uploads/1/3/1/6/131636642/9215710.pdf
    • http://files.jonahshue.com/uploads/1/3/1/3/131384127/vosunubozosaj.pdf
    • http://files.smithfieldrotarync.org/uploads/1/3/0/7/130740127/a7ec40a93adb3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/55846120372.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/67829153679.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/19761233990.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4540/files/reproduccion_animal_aplicada.pdf
    • https://cdn.shopify.com/s/files/1/0439/4231/4152/files/pasta_recipes_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/ligavopejow.pdf
    • https://cdn.shopify.com/s/files/1/0437/8873/0525/files/19106743120.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6944/files/40436256920.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/bsm_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/8520/8483/files/business_analytics_james_r_evans_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9597/files/customs_declaration_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/biceps_tendonitis_patient_handout.pdf
    • https://cdn.shopify.com/s/files/1/0430/6095/3249/files/dark_souls_3_not_responding.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b6.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 6744 bytes
font_01_sfnt_off0000759d.bin
b354b5fce325f633c7ec3d2ddc01d80d51b53ecad7183dcbac062ad78769159f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 5464 bytes
font_02_sfnt_off0000883a.bin
5caa5010526ebce3c29ec760a05246093a4f81bfb91afeac19f8837cee4d3362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883A 10352 bytes

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