Malicious PDF — malware analysis report

Static analysis result for SHA-256 da48ddd4cda0cbc0…

MALICIOUS

PDF

50.7 KB Created: 2020-08-18 19:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03c7d53e3271c7b33e0b8054ced4b0cf SHA-1: fa11035446cd1f1f41ddcf30f7bbf8163c8bdd43 SHA-256: da48ddd4cda0cbc0abf70ee7e00f3708ab3e3e29274b14889642d5d2d81f1505
194 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, many of which point to potentially malicious redirectors or external content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=alesis+performance+pad+olx, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to external content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate malicious intent.

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=alesis+performance+pad+olx In PDF document text
    • http://sewetok.bishopwoodsschool.com/uploads/1/3/2/6/132695569/1f70b389.pdfIn PDF document text
    • http://files.trainconductorcostumes.com/uploads/1/3/0/7/130740213/tufugit.pdfIn PDF document text
    • http://files.mhorakphotography.com/uploads/1/3/1/4/131410479/webedeniwapim_ravavofov_xefidawajaz.pdfIn PDF document text
    • http://pexalu.ocfertilitycare.com/uploads/1/3/1/4/131453945/9787481.pdfIn PDF document text
    • http://files.nakukuinetlinks.com/uploads/1/3/0/7/130775215/dupelidogegonet-nuwobagulu-bozozum-moniko.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/1/0439/5322/5883/files/592741033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80884551140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0797/5317/files/tigunonidajikelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8699/4855/files/rmv-_1_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/tic-_tac-_toe_game_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/dynamics_crm_dynamic_worksheet_import.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1088/9624/files/sofiwus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/bisoniwixavagopepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/rekajirez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6676 5360 bytes
SHA-256: 9505b63a1e846bae201b0536edc632e7d6634f347224a3a84b994512f18ada3c
font_01_sfnt_off00007893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7893 15484 bytes
SHA-256: ac0e9df4d60f564e4e08e80a3187a14319896e3ab8a5e0ac30689eba59324113
font_02_sfnt_off0000a8e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8E9 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3