Malicious PDF — malware analysis report

Static analysis result for SHA-256 017c022c02ef14dd…

MALICIOUS

PDF

43.9 KB Created: 2020-09-16 19:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b32078c027ff6dc26cd422378d33e7cf SHA-1: 086246e1a51be6942a86d943ff679e33dc1c0792 SHA-256: 017c022c02ef14ddd724bf7cf6e8ab5f58f7e3de4ffdad64fe1135c060a8687a
154 Risk Score

Malware Insights

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

The PDF contains a direct link to a redirector URL, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a game mod and the malicious URL, suggesting a lure to download potentially harmful content. The presence of numerous other PDF links further indicates a link farm strategy, likely for SEO poisoning or distributing malware.

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=need+for+speed+hot+pursuit+mod+apk+1.0.62
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/kipaposixesiguxiruxanomo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/kubiwezokesaxomopivule.pdf
    • https://cdn.shopify.com/s/files/1/0434/9453/9429/files/1867321343.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/fubas.pdf
    • https://3cfe460d-05b3-4a1f-a40f-2975f19fb6c4.filesusr.com/ugd/4aae87_3a5c2b89d86643fc9a607fa7c2698488.pdf?index=true
    • https://f1afc29c-7d35-4ecc-96ac-e81e01c9480a.filesusr.com/ugd/8a9bcc_6e49cc8b165b49d89fb8f3399aea9b4f.pdf?index=true
    • https://c5432876-cc0f-4b76-b2e9-0063b23c0177.filesusr.com/ugd/c6ac46_fd87faf54fae425eb0ae282862c34185.pdf?index=true
    • https://81e79ea6-b50b-449a-aede-b573c3ccb0f3.filesusr.com/ugd/95ea6b_4ef341dd201e44aa8e51747fa6987ca4.pdf?index=true
    • https://dfc2da15-3e06-4407-8d79-034527622b2c.filesusr.com/ugd/ced2dc_21558a20ef244c47ad60450a04b9b229.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/5364402347.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/fediaf_packaging_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0430/1425/8851/files/4th_grade_math_worksheets_free_printable.pdf
    • https://cdn.shopify.com/s/files/1/0431/8334/1728/files/19787884544.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_off00005fc3.bin
09d9688d9fe7f49a77688700adbf8133b188f0a6ba496e225e3b546dac01672f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC3 5796 bytes
font_01_sfnt_off00007365.bin
ae1cfbbd97c8180661d70d849284a83bbf65086ed58cb5046f200f75c71fe1cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7365 14620 bytes