Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cf2bfaad88961a2…

MALICIOUS

PDF

48.4 KB Created: 2020-08-20 05:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4a19953f3c8f8b400e864989cc32500 SHA-1: ee18357711f32945367c20e6a785587642db6f39 SHA-256: 5cf2bfaad88961a201ac846d0a13d9975cf451c2648fc9af21a87dc2c6fc92e5
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, likely as part of a phishing or scam campaign. The document body text and embedded URLs suggest a lure related to academic formatting, which is a common tactic for social engineering. The presence of numerous external PDF links further indicates a link farm or redirection scheme.

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/pify?keyword=create+reference+page+in+apa+format
    • http://giwad.greenwayggf.com/uploads/1/3/1/4/131406444/goditamesaden.pdf
    • http://kakamop.jiayucorti.org/uploads/1/3/1/3/131380213/winidometetanok-mufesumodularo-xivarux-xokonoxogubu.pdf
    • http://files.thebaggypants.com/uploads/1/3/1/3/131381363/walivisobogoso_kegalozige.pdf
    • http://bofawen.bobkeeler.org/uploads/1/3/0/8/130813784/8e7e0d36db.pdf
    • http://files.giltnerlogistics.com/uploads/1/3/0/7/130739376/201af.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/3390/3783/files/juguzojebudulemenoxawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/4870643011.pdf
    • https://cdn.shopify.com/s/files/1/0436/0844/0990/files/sewujarofori.pdf
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/nusebe.pdf
    • https://cdn.shopify.com/s/files/1/0437/4082/3706/files/damomuwet.pdf
    • https://cdn.shopify.com/s/files/1/0428/0378/9991/files/vasowek.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/45666092847.pdf
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/32089422666.pdf
    • https://cdn.shopify.com/s/files/1/0429/2847/2220/files/71011558107.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/3ds_max_animation_tutorial_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/gcse_english_language_past_papers_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/brighton_rock.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3640/files/endocardite_infecciosa_aguda.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64831632673.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000732c.bin
24bd2dfd6d1e5d365d2cae9a3a37c780d7d75fb8077a834e26652e9635ca0696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 4936 bytes
font_01_sfnt_off000083db.bin
a65cdd71bdfc55d9b059111faa8fbb6668205921ecd870e7595b3c270f1694ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83DB 10060 bytes
font_02_sfnt_off0000a663.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA663 4324 bytes

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