Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf4341fdeb648b5…

MALICIOUS

PDF

47.4 KB Created: 2020-08-25 10:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03a3b501abc286e70418b0669e235622 SHA-1: d7a08bc9042324c5b2ea61fb4302640ea923c8c8 SHA-256: 6bf4341fdeb648b59cfdc25651eed37f9042ccbb477af315a306a0149f7f9af3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector infrastructure designed to lead users to malicious content. The ML classifier strongly indicates malicious intent, and the presence of numerous links suggests a link farm or SEO poisoning tactic to distribute malware or phishing content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=organismos+geneticamente+modificados+pdf
    • http://xawez.weldcountymeatgoats.com/uploads/1/3/2/6/132680813/gulizala-watem-juxalo.pdf
    • http://siwus.narrowminded714.com/uploads/1/3/1/3/131378776/jagifaguw_pimugobor_lasajubilote_repobelaku.pdf
    • http://wigapewet.capronlawllc.com/uploads/1/3/0/7/130738885/b770a15cd5411.pdf
    • http://karepe.nltcassville.org/uploads/1/3/1/1/131164250/4750852.pdf
    • http://tupajix.jomosworld.com/uploads/1/3/1/4/131408738/jawulateg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/bartlett_1932.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/22028748065.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/70428808445.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/rorapigoxasojoja.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/decimal_place_value_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95936092566.pdf
    • https://cdn.shopify.com/s/files/1/0428/9590/0828/files/wovux.pdf
    • https://cdn.shopify.com/s/files/1/0432/4402/8068/files/review_holika_holika_sheet_mask_pearl.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/86925409870.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/fopinit.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/breath_of_the_wild_cemu_rom.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_off00007ac8.bin
c75277486d4c355c1579c8ff833f3c3434b12c9d3801941277334cb7698c9aa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC8 5468 bytes
font_01_sfnt_off00008d44.bin
6b39b67484794377edb77dafe2d64b33bb32ad0d163b1273a70c47fe442cb042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D44 10728 bytes

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