Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eef4e28ffc31365…

MALICIOUS

PDF

46.4 KB Created: 2020-10-07 15:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 512e103bb29ac02337970145c9ef4003 SHA-1: feaa6b25f0c9f4a3b0b6290eddb1a41e410edb8f SHA-256: 1eef4e28ffc31365a1ba595c679241432e8304d46a4c01b73735efd73a756c8c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'Ford mustang repair manual', which is likely a lure. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to malicious infrastructure, potentially for phishing or malware delivery.

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://ggtraff.ru/pify?keyword=ford+mustang+repair+manual In PDF document text
    • http://files.frontrunnersri.com/uploads/1/3/1/8/131856479/puvupob-toponasefep-ladawew-sibolivusavofo.pdfIn PDF document text
    • http://lopabebi.tool-hire-shops.co.uk/uploads/1/3/0/7/130775403/c49459c8.pdfIn PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/36195080231.pdfIn PDF document text
    • https://site-1042279.mozfiles.com/files/1042279/biwewelib.pdfIn PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/74596803332.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4864/7835/files/82611853020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2308/4951/files/analyzing_the_cuban_missile_crisis_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/4317541987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4371/1907/files/x-43m_multi_grip_crossmember.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4930/4742/files/30931636512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/xugaxexegokigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6056/2582/files/mezufemikufegutusamagoguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3437/7377/files/golf_cart_engine_swap.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EA 5236 bytes
SHA-256: 4f746dfc082fb116b0f722b8e9c26a8a629f60a8d9ff02927563d529845eb9c4
font_01_sfnt_off000085a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A3 12132 bytes
SHA-256: 6f27e8e7c89f433dec258cdc810ce41589abf635d83cc0e36c96d011f7ab1c91

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