Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b64f920fdc0285…

MALICIOUS

PDF

86.5 KB Created: 2020-09-09 00:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8369df197e144c8b1c33ab674b0b2f3d SHA-1: d4c195a7140470876be937f856b56a31f9f6b15f SHA-256: 60b64f920fdc0285097b2354242d35064af66c06cf10aff666afc983ee9026dc
154 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of a link farm and a redirector suggests an attempt to lure users to malicious websites, likely for phishing or scam purposes.

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/wix?keyword=canvas+translate+android
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/113e89_79730752cf13486c9046d976392c973a.pdf
    • https://static.usrfiles.com/ugd/4cd51e_3ac8f38fd42049f9ae1b8cab4ca4eb8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcf3dfdbe8d142f7a2f21ac2f973041f.pdf
    • https://static.usrfiles.com/ugd/70a38d_a2a5d62c977044a5b036ef681391924d.pdf
    • https://cdn.shopify.com/s/files/1/0431/2698/0765/files/caricatura_politica.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/rusotaku.pdf
    • https://cdn.shopify.com/s/files/1/0438/0445/9168/files/20783829075.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/jagomunarafipafuso.pdf
    • https://static.usrfiles.com/ugd/227d0f_5cd5478ba25b41b48412b2fcfcf79d07.pdf
    • https://static.usrfiles.com/ugd/764aaa_2e6e6ee81ae549f08b0c39914ac602fc.pdf
    • https://static.usrfiles.com/ugd/6a4619_893861bb9772489f9cb5593939093afb.pdf
    • https://static.usrfiles.com/ugd/eb6612_07a17bc6fd534311bcfcee717cde0d73.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/tcm_fg25_forklift_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0462/2417/9354/files/engageny_math_grade_6_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/3467/2294/files/blocs_wave_manual.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_off00011a11.bin
7c416f80be378e8a056d34e7f04f8711658988e5e5529cee557ef2c357780abe
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A11 4784 bytes
font_01_sfnt_off00012a5c.bin
fdc0467df454c5b199b52461bebe7bd8a72254491483e96a739375407fe9c2b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A5C 9948 bytes