Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca0b2ec51ca1e726…

MALICIOUS

PDF

42.9 KB Created: 2020-08-24 07:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8cbc4e3ae6301412ff2884a569887b93 SHA-1: ef962d2adc43dcf51dda86538450d8c8e0bfc74f SHA-256: ca0b2ec51ca1e726abc71bb07c3ae80870d816b5b43a1ba3ba9878d7132f37dd
242 Risk Score

Malware Insights

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

The PDF contains a prominent link that masquerades as a free template download but redirects to a known malicious domain (ttraff.com). This indicates a social engineering lure designed to trick users into visiting a malicious site. The PDF also contains a link farm pointing to numerous benign Shopify URLs, likely an attempt to obscure the malicious redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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.com/pify?keyword=microsoft+word+travel+brochure+template+free In PDF document text
    • http://files.alottawalkin.com/uploads/1/3/1/3/131379375/6192222.pdfIn PDF document text
    • http://jetinipuz.ttandeuropemotorcycleadventures.co.uk/uploads/1/3/0/8/130813834/16b02fdc8e.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/1/0435/5345/6289/files/translate_dutch_to_english_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/jupenum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/9813687565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5927/7987/files/98563027908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7868/8408/files/zewikokibopanelovogunine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/jusesakomazimumaguguka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9974/1596/files/45022246959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3167/4535/files/shatta_wale_thunder_fire_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5775/2733/files/91886303328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/zadomabegiluxawepifuli.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
🗂 Part of campaign: klarahorackova.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6926 5692 bytes
SHA-256: 4ab665acde19cfaf83dd6fb8e14bc48346b6d7321cf1ac584d97fae2b3704715
font_01_sfnt_off00007c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6D 9912 bytes
SHA-256: 1b328fd45ab81a83bc0ff686cabdd290c22bffdb983e37e5608b25076323591a