Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6d860349e49030…

MALICIOUS

PDF

72.5 KB Created: 2020-07-09 11:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdf060e19bce3cbd3e1975d91b54f50e SHA-1: 4f098e869f0a4242d379f5433caf5b03c166dfc3 SHA-256: ab6d860349e490306d26ae39f19bfe06caa3de84b42716b0f5932f5047d26807
152 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 User Execution: Malicious Link

The PDF contains a high volume of external links (PDF_SEO_LINK_FARM) and a link to a known malicious redirector (PDF_MALICIOUS_REDIRECTOR_LINK) at https://ttraff.com/pify?keyword=deskripsi+varietas+padi+2018+pdf. The document body contains text referencing 'Deskripsi varietas padi 2018 pdf', which serves as the lure. No scripts were extracted from this sample.

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=deskripsi+varietas+padi+2018+pdf
    • http://files.healinghurthearts.blog/uploads/1/3/1/4/131409024/9356419.pdf
    • http://files.fuze.co.uk/uploads/1/3/1/4/131406934/bedd9.pdf
    • http://files.wamuranstanleyrivercricket.com/uploads/1/3/1/4/131409557/a71928414e2.pdf
    • http://files.historyunderground.us/uploads/1/3/1/1/131164567/wutorugoriz.pdf
    • http://files.sallysweetland.com/uploads/1/3/1/4/131438249/e377953a8cde1ef.pdf
    • http://files.sathiavanee-veeramoothoo.com/uploads/1/3/1/8/131871891/jidutemepupaz.pdf
    • http://files.constantcovering.com/uploads/1/3/0/9/130969887/8d0f04560.pdf
    • http://files.tinderbox.com.sg/uploads/1/3/0/8/130813799/segedunepup.pdf
    • https://jurikebig
    • https://jurikebigox883042776.files.wordpress.com/2020/06/tisuvedonagawisekuwezasat.pdf
    • https://vegowukusa.files.wordpress.com/2020/06/62885175291.pdf
    • https://jetufaru.files.wordpress.com/2020/06/35030567166.pdf
    • https://lumozipezu858735365.files.wordpress.com/2020/07/bofuvud.pdf
    • https://wipixop265946915.files.wordpress.com/2020/07/botarar.pdf
    • https://viledegup.files.wordpress.com/2020/06/nipunajusenawiwulolup.pdf
    • https://ditilepikap.files.wordpress.com/2020/06/25318107872.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66923604261.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/risekumomivedopela.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5a7.bin
6210714c79ab1cad20f3944076e882afdabc8beada4b14c14e6c8bc15f843684		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A7 5220 bytes
font_01_sfnt_off0000e782.bin
925f651d7783c662514039b5cda3d5f50c0bb4c60ac36af7d9bb885b50c1fd28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE782 14472 bytes

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