Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0669ca607635986…

MALICIOUS

PDF

38.5 KB Created: 2020-08-11 02:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6e93f970b80841628e2a6128839b153 SHA-1: 1b28b80d291617cb8ff5309dfba7f704e1088750 SHA-256: a0669ca60763598608383979548323b1d402cedb0513ea657a02fa58c21eb9d6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The document body explicitly mentions 'the umbrella academy dallas comic español pdf' and contains a link to a redirector that uses a similar keyword. This suggests a phishing or scam attempt to redirect users to malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=the+umbrella+academy+dallas+comic+espa%25C3%25B1ol+pdf
    • http://files.futureomro.org/uploads/1/3/2/7/132712332/bejujawogo.pdf
    • http://files.jonathaneccleston.com/uploads/1/3/1/3/131379134/9791134.pdf
    • http://lusikaka.star-keys.co.uk/uploads/1/3/2/6/132680903/9479691.pdf
    • http://gerun.twcnpc.com/uploads/1/3/0/8/130814328/volijaru.pdf
    • https://cdn.shopify.com/s/files/1/0438/0157/5586/files/career_values_scale.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/basic_electronics_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/gabak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/comment_apprendre_a_parler_le_francais.pdf
    • https://cdn.shopify.com/s/files/1/0454/2365/7118/files/82192083765.pdf
    • https://cdn.shopify.com/s/files/1/0436/0162/5252/files/rujugatavurofuzofekorebi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/spectrum_reading_comprehension_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/kuxofiwafiwefoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/cafe_creme_book_free_download.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047ed.bin
be272f9fec819296202d809e896bf102e674e324558fca82010cf8455abb297a
pdf-font-stream PDF embedded font (sfnt) at offset 0x47ED 5496 bytes
font_01_sfnt_off00005a5d.bin
b64a12493653ee6f3d7284ffd4d732bf42d8b2f760c5b190bc9d4e0934dd6570
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5D 10152 bytes
font_02_sfnt_off00007cda.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDA 4324 bytes