Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebfeb50028c5007…

MALICIOUS

PDF

55.4 KB Created: 2020-08-20 07:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f52082d23a565a98943d53939740475 SHA-1: 190922e7f8f88812652a70bcfdd7dc8b969b306b SHA-256: eebfeb50028c5007e38549124831438084e9d99965b807ac133f4ace3ef5940c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a malicious redirector link. The document body, though partially corrupted, contains text that appears to be a lure for search engine optimization. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware distribution site.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=all+symbol+name+list+pdf In PDF document text
    • http://files.356sog.org/uploads/1/3/1/0/131070525/54195.pdfIn PDF document text
    • http://files.slang4201.com/uploads/1/3/2/7/132740405/76055fa02971381.pdfIn PDF document text
    • http://files.siciliancasamia.com/uploads/1/3/2/6/132681476/7690008.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/1/0438/1959/7981/files/puvunaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/57134773798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/mixed_fraction_addition_subtraction_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1503/7351/files/27666042738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/99954237116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/19619773160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/48539099053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/wogokofenilidajop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/falasevuvupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3302/5960/files/bowigaxigodegivivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/71842286018.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 5320 bytes
SHA-256: d9807dfa08eec2f23ecfb28951e78634bbc8bb52ba59771c6385b3ee9c5c4549
font_01_sfnt_off00007669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7669 19684 bytes
SHA-256: 92c07a0d97a622ef74b10b21b3e6b3f9ade37951b97c017a3fe81420270c4479
font_02_sfnt_off0000b445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB445 18036 bytes
SHA-256: ca99d0e84d89f0b69c15cb961831bb8eddea4c0950e426c0fc767df0b2fc7d5b

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