Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1a2dc29c32563a…

MALICIOUS

PDF

82.1 KB Created: 2020-08-31 11:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17c8e756c67087586b4ca630305673cf SHA-1: 176f5b370e9c51c71d94f6af8d1937aa0c8408fd SHA-256: bd1a2dc29c32563a955f4cc71e0bcad16ff47b2ccbd2d5201297f1e759f01cdc
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates a phishing attempt where the user is tricked into clicking a link that leads to malicious infrastructure. The PDF also contains a large number of links to shopify.com, likely part of a link farm to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/wix?keyword=fluid+mechanics+8th+edition+pdf
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/28163005585.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3144/files/assembly_line_android_game_wiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/2059178165.pdf
    • https://cdn.shopify.com/s/files/1/0439/9392/3742/files/difudekeximunawuri.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/asset_management_process_flow.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/domipexevudadobadoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/bodevefopamixore.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/dazerusetabidajizopode.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/arbitration_and_conciliation_act_bare_act.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/kobowefesexelijamobe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/resumen_de_cementerio_de_elefantes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0336/9878/files/gopesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1082/6146/files/free_ccna_200_125.pdf
    • https://cdn.shopify.com/s/files/1/0464/9884/0744/files/gojavivupajokefilovawavo.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4fb.bin
61220a0dae34d1298b72f9dc29e84aaedfd295c424e610d0b93cf322ab2cb80f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FB 1768 bytes
font_01_sfnt_off0000bda2.bin
f634f27382e533507cbf35f6ea2a4f5ed68d0d100065e3895ea43c9c202fa277		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA2 5448 bytes
font_02_sfnt_off0000d004.bin
5f07b96a345167f8d597a4b3e1fe0e52dd7a62508af6f8e7b00de7561a89dfc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD004 8976 bytes
font_03_sfnt_off0000e1c2.bin
19a8b2b29cb5e1c9dd376a58434270af37606b80c66c62aa3e5fddb6b85ff631		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C2 2600 bytes
font_04_sfnt_off0000ec55.bin
c8fda228ba40375d7fb06eb3abdac32828fcf73d1a485b8e2bad602271c5fb0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC55 18024 bytes
font_05_sfnt_off00012460.bin
34b4a006e46ebb892e96cfc35f78d07992dc2dd5c29e8427fcfcaccfd8979a47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12460 16292 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.