Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df371c189b40ad9…

MALICIOUS

PDF

46.5 KB Created: 2020-08-15 05:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5633d35faa6b1f23cf92d11c64af357c SHA-1: 3fe1650d88e1915b4fd00f90d01f9587bbf89c55 SHA-256: 7df371c189b40ad9b29158ab1723b1931fa92cdf5eed761ce26099fb7374d654
174 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'Nara Japan travel guide'. The presence of a malicious redirector and a large number of external links indicates an attempt to direct users to potentially harmful content, likely for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=nara+japan+travel+guide
    • http://files.janethunter.com/uploads/1/3/0/7/130776567/8c1e66ea4035.pdf
    • http://files.djfndctn.net/uploads/1/3/2/8/132814166/6592140.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/77615061656.pdf
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/33192864495.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kusamusa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/19468391921.pdf
    • https://cdn.shopify.com/s/files/1/0437/8286/5047/files/basic_english_dialogues_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/43735466919.pdf
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/lulezoledo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/pawejunuzide.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/45319774764.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/59389472362.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_off00006d20.bin
a3f17e3af4d8ec1cd4e6f539da80dc119f170211eaa3652cc3e798a988d8a14a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D20 3836 bytes
font_01_sfnt_off00007ae5.bin
26413e9306050daf29a5dc93c29c899bb182c2a033e6e4285706ac830b84e19d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 5056 bytes
font_02_sfnt_off00008c34.bin
368b00e6489d8d3170ecf7de7e48d64ae2fb2dd43b4d04b82f663a25df2fea45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C34 9748 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.