Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c11c470eb1bd958…

MALICIOUS

PDF

59.7 KB Created: 2020-08-20 06:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6846ff6768174620bee87313e02cc16c SHA-1: 37dfdd28030fd135aef4edfb3e96f378c890226e SHA-256: 0c11c470eb1bd958a555a9aa70c3a8eab16e4a0db172afc1b2b80518b38165a7
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on SEO-optimized domains and redirect through a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains the URL that is also present in the heuristics. This suggests a phishing or malware distribution attempt, likely using the document as a lure to encourage clicks on malicious links.

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=bolted+joint+engineering+pdf In PDF document text
    • http://files.designstationdiy.com/uploads/1/3/1/3/131379477/sulanotuzabuwug.pdfIn PDF document text
    • http://files.mandarin-garden.co.uk/uploads/1/3/2/8/132816195/kaxuwev_ridor.pdfIn PDF document text
    • http://pasunite.cardsforbravery.com/uploads/1/3/0/8/130814788/lizogukewubetedom.pdfIn PDF document text
    • http://files.juliedascoli.com/uploads/1/3/1/8/131856743/ece89dd30cb0f3c.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/1/0452/0479/9639/files/castrol_magnatec_5w40_a3_b4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4102/9276/files/dorimenewududezasijefopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7414/9793/files/13471166135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/vudokivebosokekipukatapis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7953/6533/files/medical_dictionary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/zoology_books_for_bsc_part_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/psychology_ciccarelli_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/74437004368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/el_rey_arturo_ylos_caballeros_de_la_mesa_redonda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/siwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1814/8247/files/android_butterknife_oncheckedchanged_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/warcraft_3_nocd_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4811/5096/files/cisco_firepower_2100_licensing_guide.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_off0000ad6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6B 4944 bytes
SHA-256: 9943d7087e04e627cc985e404d3adbd804b1fc711996dd4b1414e956ad6055ff
font_01_sfnt_off0000be59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE59 10452 bytes
SHA-256: 10e681d0c2dc1c64e540d3c7497b3b488d0ea0b7cbb53e37f85f8e6136553455