Malicious PDF — malware analysis report

Static analysis result for SHA-256 0940d8b347ebc89c…

MALICIOUS

PDF

54.3 KB Created: 2020-08-10 20:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9ee41462ae0e786db2ec470852921db SHA-1: 404a7b1bee989d988c43459fdf49c98d1c1eddc0 SHA-256: 0940d8b347ebc89c31bbf8bc3596e2276c75b5cb2853e43bee4ee1aa3faffe8a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though partially corrupted, suggests a lure related to 'Tipos de anemia pediatria pdf', aiming to trick users into clicking the malicious links. The presence of a large number of external PDF links further indicates a 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=tipos+de+anemia+pediatria+pdf
    • http://files.northcoastcounseling.com/uploads/1/3/1/3/131380236/ritim.pdf
    • http://ragog.stellarendurance.us/uploads/1/3/1/4/131407995/5671152.pdf
    • http://files.music2dance2djs.com/uploads/1/3/0/9/130969654/dagasupujujixugav.pdf
    • http://files.quillviolet.com/uploads/1/3/0/8/130873983/7389692.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/rinoxujileluwaribelanemif.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/21211738122.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6460/files/25497762658.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/71041096292.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/lowes_livingston_tx.pdf
    • https://cdn.shopify.com/s/files/1/0433/2643/9582/files/96271765347.pdf
    • https://cdn.shopify.com/s/files/1/0435/1279/1192/files/pigomivuvebebuja.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/rojutoxezusarisetu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/mipimoju.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/ripogixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/vudokivebosokekipukatapis.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/autocad_2d_and_3d_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/albertine_sarrazin_astragal.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_off0000907c.bin
c807f56a4106707a566eecbe6bad61706f96a5e5303f5e58bcf8cadc2a05d6ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x907C 5104 bytes
font_01_sfnt_off0000a1b7.bin
f02a635199a1f5c0e798b213e04fa7069a97f41a5b45160d841efc35a079e511		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B7 13632 bytes

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