Malicious PDF — malware analysis report

Static analysis result for SHA-256 663897c5dc7c5547…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 12:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a58893181dc9cb17ee0d10dd9d9047aa SHA-1: 5df5c1ce654429fa7b4de69f966819b44159f4f0 SHA-256: 663897c5dc7c5547c46539fc564f138e2e1576499b2745b82396086d4ce10261
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely for credential harvesting or malware distribution.

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=legal+fact+sheet+definition
    • http://files.charleysplacemorrismn.com/uploads/1/3/1/4/131407045/rokuruzevabi.pdf
    • http://lafaj.intoutuotni.com/uploads/1/3/1/4/131454143/4913682.pdf
    • http://files.byronwashington.org/uploads/1/3/2/7/132710763/wapabozogu-dakolaju-kokirup-tosuguwixeg.pdf
    • http://gaseran.joshbroussard.com/uploads/1/3/2/7/132740873/85ec5378.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/ap_icet_2020_notification.pdf
    • https://cdn.shopify.com/s/files/1/0436/2731/5353/files/zemabomebesoniwijanir.pdf
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/harmony_remote_software.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/fepujozizosifixomazule.pdf
    • http://buzuraraz.prehistoric-inc.square.site/uploads/1/3/0/8/130814674/demur.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/mathematics_test_2009_answers.pdf
    • https://cdn.shopify.com/s/files/1/0464/7357/6616/files/hunter_x_hunter_ending_song_3.pdf
    • https://cdn.shopify.com/s/files/1/0443/0423/6700/files/bbg_2._0_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/2099615017.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/sheet_street_side_lamps.pdf
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/audible_books_to_kindle.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/65683377365.pdf
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/67216659876.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/aristoteles_metafisica_libro_2.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_off00006177.bin
9785dc80ccbc3a216233b06ced5402bfc75612725209bf000c2de359b4754f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 5128 bytes
font_01_sfnt_off000072ea.bin
2ff285fbf14772ef90c6f07ee9db5e12dbaecd368be7fbb751c2b6ba74a6daa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 10260 bytes

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