Malicious PDF — malware analysis report

Static analysis result for SHA-256 7932d62c4a1c15ac…

MALICIOUS

PDF

84.9 KB Created: 2020-08-09 13:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d40ce2f33cce824b25d2904c2b1486d1 SHA-1: 0ff8d97679ee0bfac6716f1ed4ae85b369dd1fbb SHA-256: 7932d62c4a1c15ace59c22d09081d45da6dc9541f371cbe27179079adbca0b4e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link that, when clicked, redirects through a malicious URL (ttraff.cc) disguised as a document about 'Utilitarianism examples pdf'. This suggests a phishing or social engineering attack aiming to lead the user to malicious content. The PDF also hosts a large number of external links, many pointing to Shopify, likely for SEO manipulation or to host further malicious content.

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=utilitarianism+examples+pdf
    • http://files.chaseaviation.com/uploads/1/3/1/3/131379183/kimir.pdf
    • http://files.marrymeinindy.com/uploads/1/3/2/6/132683260/9272c315246.pdf
    • http://files.highsierrachemicals.com/uploads/1/3/2/6/132681294/fukojofu_sekoxiwi_pedatiwi.pdf
    • http://fikik.studioescargot.net/uploads/1/3/0/8/130813612/8a66e3.pdf
    • http://files.reverbqueers.com/uploads/1/3/1/8/131856987/begazakovizovomini.pdf
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/5515044819.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/single_step_income_statement.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/matupele.pdf
    • https://cdn.shopify.com/s/files/1/0430/8336/6551/files/classroom_assessment_and_evaluation.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/zofuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/8963/9077/files/tubupevatavirowuvedebofaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/xinetolafu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/lolur.pdf
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/82580060739.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/73939618787.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001107b.bin
a3c5e3c5a294ca478349b45c97a24cc268cb9f23b95c684a13689d81367de689
pdf-font-stream PDF embedded font (sfnt) at offset 0x1107B 5244 bytes
font_01_sfnt_off00012242.bin
e2632c151773760878a44bb72f3b87b4c2cb813f553b9662a71825fcbe8af940
pdf-font-stream PDF embedded font (sfnt) at offset 0x12242 10468 bytes