Malicious PDF — malware analysis report

Static analysis result for SHA-256 7462916f06d199ae…

MALICIOUS

PDF

46.9 KB Created: 2020-08-20 19:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce97bf01bd73e26c9ae564c595684992 SHA-1: f5c09867a3a5db2fdd91c7f6f146f5d691651b2a SHA-256: 7462916f06d199ae40871b8e8bd44782a0b5d88437a6af291b63381c13968c84
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised as a template for a children's book manuscript. This suggests a phishing or scam attempt to redirect users to malicious content. The PDF also contains a large number of external links, many pointing to benign Shopify URLs, but the presence of the malicious redirector is the primary indicator of compromise. 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=children%2527+s+book+manuscript+format+template
    • http://files.populationservices.org/uploads/1/3/0/9/130970012/fdb59.pdf
    • http://files.livelovelybeauty.com/uploads/1/3/0/7/130775429/50e2df73e510e.pdf
    • http://files.thehanoverclub.com/uploads/1/3/1/3/131398182/22090.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/vegavewiles.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/63344847278.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/sscp_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/5085/0714/files/fadejeranazebewaniroxutak.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/surah_al_kahf_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/88267748138.pdf
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/vuwokomexenigonumeteb.pdf
    • https://cdn.shopify.com/s/files/1/0430/2870/9539/files/sokilenunosaref.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/github_commit_command.pdf
    • https://cdn.shopify.com/s/files/1/0440/5395/4710/files/calendario_con_festivit_2020.pdf
    • https://cdn.shopify.com/s/files/1/0449/2158/5831/files/public_administration_journal.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/84256563151.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_off00006ce1.bin
7d9cdfdaaa4be1ee0a29353e09e074966da6ee85b0d92444f861459248e335a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE1 5540 bytes
font_01_sfnt_off00007f75.bin
615f9dcaf073cb3c6d7e875347f08c8d9c6fa92588a01178bf64c271f907819a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F75 2532 bytes
font_02_sfnt_off00008a87.bin
c7c1a36c0a7c40122822e2ea3e072ddd0f842d656ca04a5ce9af8df5e656b531		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A87 10408 bytes

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