Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f3177cf192f543…

MALICIOUS

PDF

73.9 KB Created: 2020-08-13 21:39:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adfb7be3fb7cfe6cec9fda04d789feb8 SHA-1: 697f452208a157331f11443970856ba3147537b7 SHA-256: 63f3177cf192f5436024c8fc7b64e906355fb3c5fcf1d7efca3bdd28d49551fd
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=boardwalk+empire+season+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a lure for a "Boardwalk Empire season guide". The presence of numerous PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. No scripts were extracted, but the malicious link is the primary indicator of compromise.

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/pify?keyword=boardwalk+empire+season+guide
    • http://files.wwvmc.net/uploads/1/3/1/4/131409090/wogigomak_dawevajuvezo.pdf
    • http://files.portabletoiletsmichigan.com/uploads/1/3/1/8/131871704/577a347310eade.pdf
    • http://files.jessallenica.com/uploads/1/3/1/3/131380308/4601676.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/first_angle_projection_vs_third_angle_projection.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/dokedimunobalo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/ielts_vocabulary_for_writing_task_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/54640508417.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/25969783151.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/zudopemusidigev.pdf
    • https://cdn.shopify.com/s/files/1/0431/9916/8673/files/48020886334.pdf
    • https://cdn.shopify.com/s/files/1/0429/4557/7116/files/aminoacidos_composicion_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/look_back_in_anger_text.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/liwaragenarowaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1245/5591/files/rigokuvisoguwinetivu.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_off0000e14f.bin
20d76960ee8cad1023c3477cbb63e1f23df3aac545582ade38f48480fc2ca083		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE14F 5484 bytes
font_01_sfnt_off0000f3f0.bin
238683f7a454975711ad6c634c5f8c45d1188772dbcb534d4062d7e704de3af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F0 11280 bytes

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