Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c80f0d538f77c86…

MALICIOUS

PDF

48.2 KB Created: 2020-08-15 17:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed626ef1680170518616336ce87dbf39 SHA-1: a0ba0da8fb6139f4565348dfbdb58d8705fed42d SHA-256: 1c80f0d538f77c8689436b1c694958639bd37b596ddea7efb25e681e0aed71d5
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a Honeywell alarm keypad manual. This suggests a phishing or social engineering attack. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse for traffic redirection. No scripts were extracted, but the presence of malicious links indicates a high likelihood of a drive-by download or phishing attempt.

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/wb?keyword=honeywell%20alarm%20keypad%20manual
    • http://radebakax.yogalotuspond.com/uploads/1/3/0/9/130969656/597624.pdf
    • http://files.carbonneutralnetwork.org/uploads/1/3/2/8/132815015/namewebuza.pdf
    • http://files.ilihiamaui.com/uploads/1/3/0/8/130814652/75acb5367c.pdf
    • http://zobunutad.thevolumeofthebookministries.com/uploads/1/3/0/7/130776677/nobivejurirawi-semamod.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/28351680560.pdf
    • https://cdn.shopify.com/s/files/1/0434/2251/5351/files/mipepafo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bijalikupuxamimidesedol.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/tom_ferry_business_plan_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/speaking_in_tongues_play.pdf
    • https://cdn.shopify.com/s/files/1/0449/3590/5448/files/1st_grade_writing_complete_sentences_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/7778/8057/files/sigma_aldrich_chemical_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/205667810.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ac1.bin
f2b23c4fc67714dd942371f5ab5acaaa59a27b343c15d76445abc3c72121800a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC1 5144 bytes
font_01_sfnt_off00007c05.bin
7dba557bf7430b25df70f985e16d9caac4af2fb783eebb3b0dd08941983bca4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C05 1412 bytes
font_02_sfnt_off000083b8.bin
abe3ff9aef60b497c8d42a78f886638b1f53df3c45d5c29dea13c27b7e449da0
pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 15604 bytes