Malicious PDF — malware analysis report

Static analysis result for SHA-256 03db19890eb7b57b…

MALICIOUS

PDF

44.5 KB Created: 2020-09-02 07:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5392646a66ef049319550f4c018f0b6e SHA-1: e235972e6dd504281d2a6cd36c5af3b36d8a5980 SHA-256: 03db19890eb7b57bb339361388244b79144e5e323dff9ee245cb106147d84e2b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to ttraff.link. The document body, though heavily obfuscated, contains text suggesting a lure related to 'metaphysical poetry penguin classics pdf' and includes the malicious redirector URL. The ML classifier also strongly indicated maliciousness. The presence of embedded URLs and the redirector link suggest an attempt to lead the user to malicious content, likely for phishing 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.link/wix?keyword=metaphysical+poetry+penguin+classics+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/2122/8442/files/adjective_phrases_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/wejab.pdf
    • https://cdn.shopify.com/s/files/1/0464/0463/2731/files/cross-_platform_business_definition.pdf
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/hipaa_research_training_quiz_answers.pdf
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/wodesasebafezupakapugod.pdf
    • https://static.usrfiles.com/ugd/9a242c_19f8bb823bc04070b3a1cceee670bfa2.pdf
    • https://static.usrfiles.com/ugd/65b209_61259cb1d5684042af03783035208c48.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9b934b093f84594a9050bd36f476a63.pdf
    • https://static.usrfiles.com/ugd/850f07_61d5968ca6504d89a5cf1b15d82f268a.pdf
    • https://static.usrfiles.com/ugd/89363e_4182c8c75d734130a6c0115a8d3399cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8010d0e50c94d93b985fc036080c50c.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/68271912050.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6839/files/povusazinoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/discipleship_bible_study_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/91915394407.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0202/files/sonitixixureviveke.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_off0000629a.bin
caede306852a370ccdd54bc3c164aad0956c70c62a9e9b0dd7ed5420c751b0b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629A 5408 bytes
font_01_sfnt_off000074fc.bin
8ddbb0ae4011756c338ebd1d8ba0a66d0cfaa25f340665d198862f29826657a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FC 10000 bytes
font_02_sfnt_off000096f9.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F9 4324 bytes

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