Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d41f3688a1f093…

MALICIOUS

PDF

38.0 KB Created: 2020-09-06 17:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59ff832f7fd4ae98ce4c4c69a3dd43dc SHA-1: 614fdf999d437eaddbeb045c2efd0c70727f1e57 SHA-256: 07d41f3688a1f0939cd188cae160e20fdf1f3a8bc9a82d4f0f5afaf97481cba7
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to look like a real estate map search. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware delivery. The ML classifier strongly indicates maliciousness.

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.me/wix?keyword=bahria+town+rawalpindi+phase+8+map
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/akhiyan_ne_akhiyan_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/top_100_maple_story_private_server.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/reported_speech_questions_test.pdf
    • https://cdn.shopify.com/s/files/1/0452/5621/2640/files/carcinomatosis_peritoneal_causas.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/fojezube.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/18_x_26_perforated_aluminum_sheet_pan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/speer_reloading_data.pdf
    • https://cdn.shopify.com/s/files/1/0461/7971/3177/files/66235123324.pdf
    • https://static.usrfiles.com/ugd/9f06f8_11859f683fac4355a571f5ef2d49090d.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_b12cd0f7b6ed4687a08e44cfbdfe41ad.pdf
    • https://static.usrfiles.com/ugd/610d21_f4ecfad990774bc8897169b39de7adb2.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_ae9e5ec4096e4f71b1049b46a688e31a.pdf
    • https://static.usrfiles.com/ugd/837d34_bc57452d525b483f98aa1348c8b7547b.pdf
    • https://static.usrfiles.com/ugd/97aff7_4f8930ec051e4c30802ce03cdf4d6f94.pdf
    • https://static.usrfiles.com/ugd/868b90_787c20e9646942bebb78647e3bab5c7b.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005132.bin
2375493c0c7e7c8cce47140fe9e961e706aa62fcef6fd587f9b0f377e816402f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5132 5536 bytes
font_01_sfnt_off000063e6.bin
fad74bef405fb839c0ee4b97c7756b2eb624c7cdd5d480255524b7d0699d3459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E6 11552 bytes

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