Malicious PDF — malware analysis report

Static analysis result for SHA-256 68cab55b7a3c9b30…

MALICIOUS

PDF

50.8 KB Created: 2020-08-28 11:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2fd7b57430ca5ad89f29214252b071a SHA-1: 5084c80605c69ab2f252634a9e4f7d0b50a93f65 SHA-256: 68cab55b7a3c9b3022d463ab2803ac19452246302d10abaed7a9bd999cbbf8bf
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Tim Hortons nutrition information' and the malicious URL, suggesting a lure to a phishing or scam page. The ML classifier also strongly indicated maliciousness.

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=tim+hortons+nutrition+information+om
    • http://files.muskegonrenew.com/uploads/1/3/2/6/132681237/dodogaxebi.pdf
    • http://files.canineandequineranch.org/uploads/1/3/0/8/130874667/wuwowo-sifoxut.pdf
    • http://lipewexet.msbennettart.com/uploads/1/3/1/3/131380591/54f64bbc8eaa.pdf
    • http://jawasuka.ccgplants.com/uploads/1/3/0/7/130776326/2541927.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/26793986731.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/22363340216.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/99066968002.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4263/files/ziropinolizo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/3584815498.pdf
    • https://cdn.shopify.com/s/files/1/0440/6748/7894/files/an_inspector_calls_revision_booklet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/acana_dog_food_feeding_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/6641/6534/files/95024095831.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/pokemon_black_2_rare_candy_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/52192711187.pdf
    • https://cdn.shopify.com/s/files/1/0438/0701/5069/files/82566233265.pdf
    • https://cdn.shopify.com/s/files/1/0439/0617/1048/files/antecedentes_historicos_de_la_administracion_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/vigepuporuwabulawoboz.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_off00007bfe.bin
6a391dc110d720225006c250947d2df3e4988fa2c6d74308b325e8d9fa11da9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFE 4688 bytes
font_01_sfnt_off00008baa.bin
927db0e381ca304e82e99a85cbfe2bbcda54c2132e84e7128aa7a854f542e053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAA 10616 bytes
font_02_sfnt_off0000affb.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFB 4324 bytes

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