Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e6caaf204ceea6…

MALICIOUS

PDF

62.4 KB Created: 2020-08-11 13:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f92c64575fb97cbec88510c1e930952 SHA-1: fb69eff8d2dcbf4a3121be3375647b588f0fee4f SHA-256: 70e6caaf204ceea68639e1b6c987dd83b1c056301607ce0903c4b96e23110402
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, disguised as educational content. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests an attempt to direct users to potentially harmful sites. No scripts were extracted, but the overall structure and URL analysis point to a phishing or redirection scheme.

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.cc/pify?keyword=organic+chemistry+equations+pdf
    • http://files.schlichamericanlitghs.com/uploads/1/3/0/8/130874496/tatusivi.pdf
    • http://toxefoxup.lajhguidance.net/uploads/1/3/1/1/131163763/6097965.pdf
    • http://files.kinn131.org/uploads/1/3/1/4/131409074/fotalisudunerotan.pdf
    • http://buboxar.stanthonysparkfalls.com/uploads/1/3/1/8/131871721/8689672.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4796/7130/files/act_practice_test_with_answers_explanations.pdf
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/xuzipawiworowawefasusijal.pdf
    • https://cdn.shopify.com/s/files/1/0450/0973/1734/files/learn_and_master_guitar_lesson_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/16805904268.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/12525240135.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/72414990916.pdf
    • https://cdn.shopify.com/s/files/1/0430/4194/7801/files/36082908823.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/menomokeker.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/ammo_51.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/ed_miracle_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/38124632322.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_off0000b6dd.bin
ee711ea347d094cdc4ee292f63575ff7d5bbe3ffe94b7dd5a6d00cda4374866b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6DD 5792 bytes
font_01_sfnt_off0000ca63.bin
114fb73aecfd2182d1e0b526907e74a6fccb2098c33e987eb2890eb9756f6c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA63 10008 bytes

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