Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d82ba4e8247489…

MALICIOUS

PDF

47.7 KB Created: 2020-10-25 16:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 359cd30a41023649a5638509dd7ac9ec SHA-1: 273af067d61cf560b1f2c196b0951412b60cb99e SHA-256: 59d82ba4e82474897d188a0077d7b3b15798175be00d1184e4ced276dc6553c7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one identified as a malicious redirector. The document body text, though partially corrupted, includes a phrase suggesting a lure for a free book download, which aligns with the malicious redirector. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/123?keyword=beehive+class+9+book+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f88287cb1b60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f90bc4b87063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f9264a45ac98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f8dc43fd40ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_5f93eed450b45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8efb4da3814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_5f94ccab2838e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387711/normal_5f9312d2afc67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f87c22a45b41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/treasury_interagency_agreement_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4967/5671/files/pozusanixabawod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8913/9614/files/establecidos_y_marginados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3837/4550/files/insults_in_korean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/7756/7132/files/critical_frontline_strike_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6088/7203/files/what_a_plant_knows_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1077/5464/files/sedasigon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/23690587447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2615/5173/files/14858056940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/kaxokezifa.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/boxabipugan.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/zajonofuginape.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000651c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651C 5804 bytes
SHA-256: be8490828cd8e9ef9526b2bb2dbd2cc88c643e989b5653365ad81fe63ee69690
font_01_sfnt_off000078de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DE 6160 bytes
SHA-256: 21530fd29be44ed97a7c80e492cb16c003ef2c7142b35630b76f906cb1d7ab0f
font_02_sfnt_off00008d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3D 10468 bytes
SHA-256: bea76f855f078ac03e8b72b4ddf2da5bc08fd8a8e80ccf7042e2e57469472693

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