Malicious PDF — malware analysis report

Static analysis result for SHA-256 911472b5a9a766df…

MALICIOUS

PDF

39.6 KB Created: 2020-08-28 02:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db2f8f8e51e6a689e2236a49101eb0e8 SHA-1: 7752fd6255b1add98d701c656849ef48d67b734c SHA-256: 911472b5a9a766df16e79b44cb082595b2cce40c18f651a022971cb235de1d9f
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=integrator+and+differentiator+experi. While many other URLs point to benign Shopify files, the presence of the redirector and the ML classifier's high confidence score suggest a malicious intent to lure users to harmful sites. No scripts were extracted, limiting the analysis of direct payload execution.

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.com/pify?keyword=integrator+and+differentiator+experi
    • http://nalakod.ucfpad.com/uploads/1/3/2/6/132682787/bizifanixuj_samajuj_povobogisej.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/definicion_de_creatividad_e_innovaci.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/gureko.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/adeptus_mechanicus_codex_8th_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7888/5280/files/interview_skills_videos_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1548/7133/files/pixatufuvuku.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/tabol.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/zigitapuzegepikarewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/9604459809.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/bosibe.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/tamutadiguxunenonotebad.pdf
    • https://cdn.shopify.com/s/files/1/0437/8142/3262/files/robatubetolavilizujonax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/77238618508.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/sales_forecasting_excel_template_free.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_off000052de.bin
0fc4d742463e242e4bad2e4fb86c4872c64818bd9461d1ddc49fd36d19328a98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DE 4792 bytes
font_01_sfnt_off00006331.bin
1ba574e4bd589deaeb400dafac45ea5a3e762bc4e4117bedb200236b9d666c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 9524 bytes
font_02_sfnt_off000083b9.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B9 4324 bytes

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