Malicious PDF — malware analysis report

Static analysis result for SHA-256 694af1009abc70f7…

MALICIOUS

PDF

57.1 KB Created: 2020-08-30 08:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a214a04f7c938f0307156d34610d4297 SHA-1: 1bbb10c84feb04fa07b46fcd694653f4c2bfc4ac SHA-256: 694af1009abc70f7bc9520ead58fcbef5e20b8c4253f961d6494ed56e080479f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary redirector URL identified is ttraff.com, which is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting an attempt to disguise the malicious intent.

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=veggietales+pirates+of+penzance
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/cbe7f7_0dd51bdf00a644f8a550dae4e087ae5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_762337e21b2b4b40bb75596da384d484.pdf
    • https://static.usrfiles.com/ugd/55cc32_faf2e2acfc5a4d6d87b558c635155294.pdf
    • https://static.usrfiles.com/ugd/09273f_a588cf455cdc47c5a0f9a11cb10e6669.pdf
    • https://cdn.shopify.com/s/files/1/0431/0699/2289/files/84259019619.pdf
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/82168385013.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/24231440319.pdf
    • https://static.usrfiles.com/ugd/67e251_a6975d311daa4edeb071952ffa6fbd16.pdf
    • https://static.usrfiles.com/ugd/5af86b_40c73ded89404b038bd7fdbcca8a8db5.pdf
    • https://static.usrfiles.com/ugd/5ed537_85d4f4f702f94b8da0874a3682b3b07a.pdf
    • https://static.usrfiles.com/ugd/271e65_44085507540d4efcb569befa32bd1639.pdf
    • https://static.usrfiles.com/ugd/b8c837_971fff8c725b43fab6eeec6593806888.pdf
    • https://static.usrfiles.com/ugd/b8c837_7561fce18c124605ba7d43927f70ad2c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000938b.bin
8410f1051eb08af08617e844d14bb2b1782ac0de571aa20c3c3bd945e4da3005
pdf-font-stream PDF embedded font (sfnt) at offset 0x938B 4984 bytes
font_01_sfnt_off0000a496.bin
2e8030ab1c3b01f361c272c55983638a5b97d96323b891ef5bcab6b06b73535a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA496 11300 bytes
font_02_sfnt_off0000c95f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xC95F 4324 bytes