Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db2d001257f7a8d…

MALICIOUS

PDF

36.0 KB Created: 2020-09-06 17:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a2ebdee178be685484e2c4f0689908e SHA-1: 7127b8a5eb22111e1fc5c3b7b0ceec7c677b7f69 SHA-256: 7db2d001257f7a8d7caa3031885e8456c7e5423af7f0846b08e5c96ac0fb9188
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 indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for search engine optimization. The presence of many Shopify links suggests a link farm or SEO manipulation tactic, likely intended to drive traffic to malicious sites.

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=can+you+bold+text+in+google+forms
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/african_american_heritage_hymnal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/lunezibaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/5740/4309/files/bachmann_branchline_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0465/0070/8510/files/xuxubigemedojizat.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/5621510279.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/advanced_english_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/waxojoziwupixivesiwaxak.pdf
    • https://static.usrfiles.com/ugd/a2d007_9f43888a88df4b2b898e41887637e875.pdf
    • https://static.usrfiles.com/ugd/6350c7_b060df9ac850448e9add6981ddcb68cb.pdf
    • https://static.usrfiles.com/ugd/3e87bf_0b1e7f445e394edc9015f74739d14d31.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/luxury_collection_sheets_egyptian_cotton.pdf
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/mdn_html_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/christmas_bingo_printable.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_off0000502b.bin
0efbcd4239906177810b46983838653b1d6772685bae530ba1877bda8612e24f
pdf-font-stream PDF embedded font (sfnt) at offset 0x502B 5444 bytes
font_01_sfnt_off000062a2.bin
054868cf006a30d55b921b75f4c76e6f958e40c77933fd91cdccc8f4aa51978c
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 9596 bytes