Malicious PDF — malware analysis report

Static analysis result for SHA-256 65750c1c2f675a33…

MALICIOUS

PDF

41.7 KB Created: 2020-08-20 09:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 521d3137348475d8b321e1a04e0c6e7c SHA-1: c9d1f0586b021180dcafd2c7dae25fced807546e SHA-256: 65750c1c2f675a33a932facb13a52efa3d14f1ff4aeaef1f2d3a437e7d652cdc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.com. The document body also contains the same URL, suggesting an attempt to trick users into visiting a malicious site under the guise of an article. The presence of a large number of external links, many to Shopify, indicates a potential link farm or SEO manipulation tactic.

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=greenland+ice+sheet+melting+faster+than+thought
    • http://busogawut.roanokecommunityco-op.org/uploads/1/3/1/8/131858685/moduwomipeso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/free_addition_worksheets_without_regrouping.pdf
    • https://cdn.shopify.com/s/files/1/0429/6677/8009/files/ziwajebasuzuvemafusuvu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/38707730992.pdf
    • https://cdn.shopify.com/s/files/1/0430/7301/1865/files/administracion_de_recursos_humanos_bohlander_14_edicion_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1077/files/xuvawipudabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/39565039085.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/karedazogutosevex.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/wogubifipetave.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/ravoxotepulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2320/files/24707374723.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/58140677677.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2530/files/goxukemutinesevakor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/learn_german_with_jenny.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_off00006548.bin
b8a2d15319f712154a70b0ef5572dfa880778525100e6abebaf3b03516dc4504
pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 5468 bytes
font_01_sfnt_off000077b6.bin
7ebc36bf5253c548ee22c151c95fabb165e7d69d7312a6dc96e2cd88ec5db82d
pdf-font-stream PDF embedded font (sfnt) at offset 0x77B6 9988 bytes