Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f080df5ba5f005b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 09:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbaab2d3c540e4e175d1dc9dc184b153 SHA-1: 975398fef3c0b50c3414a4397472eea0396d53d5 SHA-256: 0f080df5ba5f005b8862ba3a3856cfef5c7db1e3ad5041db6ea933a725083baa
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a known malicious redirector, suggesting an attempt to deliver a malicious payload or phish for credentials. The ML classifier strongly indicates maliciousness. The document body and embedded links are designed to appear as legitimate content, likely a lure to encourage clicks.

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=batman+begins+original+motion+picture+soundtrack
    • http://jitomunov.lakehousestudio.us/uploads/1/3/0/7/130739309/7332800.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0372/2398/files/baaghi_movie_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/rirutabidebemaruxotalix.pdf
    • https://cdn.shopify.com/s/files/1/0438/0078/9154/files/16045336007.pdf
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/bilangan_bulat_sd.pdf
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/dmv_ca_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/0546/7035/files/coolie_full_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1040/0153/files/waiting_for_godot_book_act_2.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/is_antiform_and_anticline_the_same.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/bhaktha_siriyala_kannada_film_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/69597447637.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/59005494071.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_off00005ff5.bin
92a8f0ae2328b4ed147b51ec48a35506ff95b134ec0460130bed60e03b6a2b45
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 5644 bytes
font_01_sfnt_off00007305.bin
d8fda11aa50dbd28057199f4887d5eb99477681c471b224463990a6e146acb74
pdf-font-stream PDF embedded font (sfnt) at offset 0x7305 10184 bytes