Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aef50ab915de65d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 04:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 505d1f230662bb6e09f15c2d0c2e7152 SHA-1: f48efd8532ad19bb9b3fd2109967bac520408ce7 SHA-256: 0aef50ab915de65dd826badbbd0ad66b1c656ba29dfc575fd79758f06de1ff0e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links, including one to a known malicious redirector, `https://ttraff.cc/wb?keyword=medicare%20benefits%20schedule%202019%20pdf`. The document body and embedded link farm suggest a phishing or malware distribution scheme disguised as a 'Medicare benefits schedule'. The ML classifier strongly indicates maliciousness, and the presence of embedded links points towards exploitation for client execution.

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/wb?keyword=medicare%20benefits%20schedule%202019%20pdf In PDF document text
    • http://files.raynecreative.org/uploads/1/3/1/4/131408432/jopivuzujilob.pdfIn PDF document text
    • http://files.sharpsindianstore.com/uploads/1/3/0/9/130969131/d2ce74.pdfIn PDF document text
    • http://files.legendsmeltingrecycling.com/uploads/1/3/2/7/132711999/2f13fe5b51cf79e.pdfIn PDF document text
    • http://files.divorceandfamilylawattorney.amoriandassociates.com/uploads/1/3/1/3/131398338/243ba.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/1/0431/9143/5422/files/4457293311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/xurimifomoputom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/duke_s_anesthesia_secrets_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/49621519668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0202/files/53313176224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/literary_devices_worksheet_10th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/urc_8820_cisco.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/22242443956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/rozalotesavivanapen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/xeroreriwowujujipabitefon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76410179135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9898/files/useful_unix_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/us_address_sample.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_off00005e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E62 5872 bytes
SHA-256: 642afc748670e69b8784b3d3474e540c43755705bc9b3fbfb6578a7b1a2ab75d
font_01_sfnt_off0000725e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725E 10208 bytes
SHA-256: abef572cdceddb84efa8e4c4168d546f1d3291f02caf5f11ce9c0ea90273c70a