Malicious PDF — malware analysis report

Static analysis result for SHA-256 606aab0b173ca9d5…

MALICIOUS

PDF

61.4 KB Created: 2020-09-05 06:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 478c392d990c442fd5524cbc0a73c0d7 SHA-1: e0bc8040b97fc547bce1c8bb204303c6af1e2078 SHA-256: 606aab0b173ca9d5aae372bcbe1552bc40a531ff0c7496b155f61dbde6f1a012
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'Everlane pants size guide' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, but the PDF structure itself is used to host and redirect to malicious content.

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=everlane+pants+size+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0467/5511/9267/files/62346084419.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/apache_poi_example.pdf
    • https://cdn.shopify.com/s/files/1/0439/4303/5048/files/canonbury_primary_school_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0463/1756/8157/files/anand_telugu_movie_ringtones_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/the_angiosome_concept_and_tissue_transfer.pdf
    • https://cdn.shopify.com/s/files/1/0440/5706/7685/files/katapejogufisux.pdf
    • https://cdn.shopify.com/s/files/1/0453/6303/6315/files/goleman_leadership_styles.pdf
    • https://cdn.shopify.com/s/files/1/0428/9321/3852/files/sarovimokumepoferaluwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4984/4890/files/52964965398.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/razubu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/vaxonalulojureme.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/inductive_and_deductive_approach_in_teaching_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9142/files/alegatos_amparo_indirecto_formato.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000938e.bin
66682914c1455c238894890e6cb97f0892c74e219accb625c4c19ea6ed46ee6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x938E 5192 bytes
font_01_sfnt_off0000a54f.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA54F 1800 bytes
font_02_sfnt_off0000addd.bin
1cca75bd52f3bf14810141dd6c802573a9ff867e0e13e0a2032459815a51d8f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADDD 10524 bytes
font_03_sfnt_off0000d21d.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD21D 16312 bytes

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