Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6c0fc94c1b352c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-05 16:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5be82f805dcced27f514370eefb15ac SHA-1: b8a0333e6872771ee52eb7a1a07c7a94d47521c1 SHA-256: 6e6c0fc94c1b352c40ac9a0f71acca14d56a2a8deeb1bd45729246df50bfc514
162 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector. The document body, though partially obfuscated, includes a URL that is also flagged as a malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for further exploitation or credential harvesting. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates a phishing or scam attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=wohlers+report+additive+manufacturing+pdf
    • http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.pdf
    • http://gunesexod.cybersecurityatusf.com/uploads/1/3/1/3/131384429/4788708.pdf
    • http://files.firstteam904.org/uploads/1/3/1/4/131453121/lebonik-delaka-xotamanofed-xukib.pdf
    • http://files.goldenquestmysteryschool.org/uploads/1/3/1/8/131871745/desevel_menofev_nosevorekezab_pusejapikujanom.pdf
    • http://files.adonaisgoldendoodles.com/uploads/1/3/1/8/131871621/45f7cad4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1356/0731/files/65105186680.pdf
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/verypdf_to_word_ocr_converter_serial_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/90900370604.pdf
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/tropismos_y_nastias.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/89406573833.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/zidugubed.pdf
    • https://cdn.shopify.com/s/files/1/0433/5242/4598/files/lazut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/marcy_home_gym.pdf
    • https://cdn.shopify.com/s/files/1/0438/5849/3600/files/major_organs_of_the_human_body_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/vejitetetozipevebigogase.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006325.bin
0b84cfa1504c4d64eaea5990e7a0f133d6eafcd264f46807cfe5163f1dac7fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 5644 bytes
font_01_sfnt_off00007642.bin
02acf1f399a77b84a7916fc8d2519d14d1eb3015ad35aee8de597cd10869830a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7642 10248 bytes

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