Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8830749ea78329…

MALICIOUS

PDF

48.9 KB Created: 2020-08-20 21:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7bb3f8b641447da4c90f9e87914335f SHA-1: 43dfcffd96131c50e86bb57d10808b901c80b520 SHA-256: 2c8830749ea783292ac1635c126115ddbde42a65f7e1da3008e53a1952c169be
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a lure for remote support tools, instructing the user to install or connect with such software. It also features a link farm with numerous external PDF links, one of which, 'https://ttraff.cc/pify?keyword=teamviewer+12+ubuntu', is identified as a malicious redirector. This suggests the document's primary goal is to trick users into downloading potentially malicious software or visiting malicious sites under the guise of remote support. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=teamviewer+12+ubuntu In PDF document text
    • http://kefesor.peopleofbudjbim.com/uploads/1/3/0/8/130814674/5338506.pdfIn PDF document text
    • http://lakux.stewartsghinc.com/uploads/1/3/0/7/130775048/210f64f2c43.pdfIn PDF document text
    • http://gunidowi.lifecoachingaustralia.com/uploads/1/3/0/9/130969742/aab2f96f202369a.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/1/0434/0655/7347/files/67739598644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/alveolite_allergica_estrinseca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/4569684320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5838/0446/files/finomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/mrc_breathlessness_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/siemens_plc_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8902/files/jobadufar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/36381648180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/macquarie_group_limited_annual_report_2017.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 8

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_off00005cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAC 5048 bytes
SHA-256: 68bd3147b2402dbb8cf3f61e134d650703990a0204c2df993010d346425480b1
font_01_sfnt_off00006de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE0 18164 bytes
SHA-256: 8bc50df76efca7e04080de51e0d0a94871c5a0d496d3958c9fe1d59fead9f202
font_02_sfnt_off0000a148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA148 16376 bytes
SHA-256: 4954ddec54c61b6acc7eddbac306bc890d05f3afdfcf3ae890c7612da0a7d668

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