Malicious PDF — malware analysis report

Static analysis result for SHA-256 4465c0368172e5cd…

MALICIOUS

PDF

56.9 KB Created: 2020-08-08 06:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e139e0d77a8b3e72a97b0374ad57bc1f SHA-1: fe5e7874328ce0a6704918c38ce43e7730ad0751 SHA-256: 4465c0368172e5cd5fa6694bda74cbfd8419a5bab6cecd5bc6f23af60a6c066e
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm, which is a common technique for distributing malicious content. The primary malicious URL, 'https://ttraff.cc/pify?keyword=allah+99+names+in+bangla+pdf', acts as a redirector, likely leading to a phishing or malware download site. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=allah+99+names+in+bangla+pdf
    • http://files.keponecowboys.com/uploads/1/3/0/7/130740051/05bb2f1f1ad68.pdf
    • http://files.pouchlings.com/uploads/1/3/0/7/130776483/vawami.pdf
    • http://lejeleno.seanlynchbooks.com/uploads/1/3/1/4/131438539/getaxiguvilujeb.pdf
    • http://files.prettylittlepotions.com/uploads/1/3/1/6/131606121/rowagowil.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/86966676159.pdf
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/first_language_acquisition_and_second_language_learning.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/public_policy_analysis_an_introduction_william_n_dunn.pdf
    • https://cdn.shopify.com/s/files/1/0428/7882/8700/files/gopro_hero_4_updates.pdf
    • https://cdn.shopify.com/s/files/1/0445/8790/9284/files/2020_calendar_2020_printable_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4111/9647/files/assembler_des_fichiers_sur_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/tapumekeje.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/sekopudomobedevasugudipi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8269/files/mark_crilley_mastering_manga.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0111/files/66147171136.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c66.bin
3db04a41917f306a26fb9f87c00abe838efe0ac825b9f4d8682973556816675a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C66 5644 bytes
font_01_sfnt_off00006f70.bin
91036a96e8386c16d9bbaa22ee07fb62b9d7e2abf52b8025e35b6fbc9911b564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 11640 bytes
font_02_sfnt_off00009366.bin
f846d2ad1bad5efbb7ddc7dee64bea902af08edf5b47c51d24c17f19a2d11ff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9366 10128 bytes
font_03_sfnt_off0000b651.bin
a50d97e5c7aefc3aa3e6eb19c0ca1acf6d3d5848fb335e691c0fe20947226359		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB651 19372 bytes

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