Malicious PDF — malware analysis report

Static analysis result for SHA-256 6285b530677414c7…

MALICIOUS

PDF

38.8 KB Created: 2020-08-04 15:35:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1ddbad9cf28e97fd9376908b00dda26 SHA-1: 77d275b944a37b1a51d30d2ac466d1af7855e993 SHA-256: 6285b530677414c7212bbe6057db5cf82e254530806fc497a324e2a10f1be29c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to redirector infrastructure or potentially malicious content. The primary malicious link identified is https://ttraff.com/pify?keyword=sintesis+albumin+pdf, which is flagged as a known malicious redirector. The document's structure suggests an attempt to create a link farm, likely for SEO manipulation or to distribute malware indirectly.

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=sintesis+albumin+pdf
    • http://files.raveneyeimagery.com/uploads/1/3/2/3/132302871/nagomo_pewamuf_jasug_lepowepojijenu.pdf
    • http://files.richfeenstra.com/uploads/1/3/2/6/132696111/vojok_suzizomisa_witilexusupe_nawetede.pdf
    • http://files.dbdfilmservices.com/uploads/1/3/1/3/131379312/4146486.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/64633862536.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3357/files/getesukuxoxutufesuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/7286771435.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9701/files/best_business_plan_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/5687/4151/files/30419584003.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7424/files/ed_sheeran_x_album.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/sorekativuzujajeguji.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/paychex_employee_information_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/tigakubetenumiruxelebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8798/files/kafofaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/15567318693.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/4564441189.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/nenokigilomezerikar.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005379.bin
72089fdf9ff287ca8d86b661d6dd8627ebc1ef7958a42e0f3a138f5296302920		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5379 5336 bytes
font_01_sfnt_off00006589.bin
af612cfe1f431b91bc3eaba80c9e86fbb0ffb0af7d5f2d881217ef4d98dea31d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 12964 bytes

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