Malicious PDF — malware analysis report

Static analysis result for SHA-256 1220945c0bb6cc21…

MALICIOUS

PDF

44.8 KB Created: 2020-09-04 19:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b231aab03361362239fcb2b54f3a34b SHA-1: 76da351ac65532a5bce89d9c41273255ebdd5c79 SHA-256: 1220945c0bb6cc21cd07f315030eeb0890061c2188caccf9a66d2e934c9379a1
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a game download, which is a common social engineering tactic. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary link leads to known malicious infrastructure. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or phishing.

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.me/wix?keyword=wwe+2019+games
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/e4a001_6d9fe9fd535d47388846fee6fed474b7.pdf
    • https://static.usrfiles.com/ugd/53c654_7055a72d3b814dc5968ff893285a4aa0.pdf
    • https://static.usrfiles.com/ugd/162fe6_90794d6cc1a041428400b9c220fbf0ff.pdf
    • https://static.usrfiles.com/ugd/4479ed_df6258278f5846218701dd8f9429ee6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_411da9f96bd64d42b5d9faf7ff2e1b4c.pdf
    • https://static.usrfiles.com/ugd/3d0627_3e19118570844e259788e6d04e032053.pdf
    • https://static.usrfiles.com/ugd/8127dd_eab0b604ccbe49ddaa163629084f24f5.pdf
    • https://static.usrfiles.com/ugd/4dded2_fef7a0b34a3c42fd9e7da8fe78977d52.pdf
    • https://static.usrfiles.com/ugd/fd7405_8df4bb31d3434419aba967ce6342db81.pdf
    • https://static.usrfiles.com/ugd/f2c1dc_f36ef2b89a9c4d86bb226fe4538dde0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c50174c56f114363ba13c083e23cefd2.pdf
    • https://static.usrfiles.com/ugd/6f58fb_85eb3a7dee79414eb94eec2dd5b164a8.pdf
    • https://static.usrfiles.com/ugd/868401_0b57fd88bf8f406caa7589c7bec1388b.pdf
    • https://static.usrfiles.com/ugd/625844_6259227d635848e5af0ddd35f2a38f02.pdf
    • https://cdn.shopify.com/s/files/1/0440/7672/8485/files/agota_kristof_die_analphabetin.pdf
    • https://cdn.shopify.com/s/files/1/0462/6913/7045/files/frost_protected_shallow_foundation_design_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.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_off00007081.bin
817c888615d9c37c33dbe4f96b575f5fa5466ae11198ae63d5d9383bdad72cdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7081 5464 bytes
font_01_sfnt_off0000832d.bin
6bbe2dd82824fa836c1920c1415725bedba06e91e4f1776a8bdad90b42ce05de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x832D 10364 bytes

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