Malicious PDF — malware analysis report

Static analysis result for SHA-256 4faad0c22359ba74…

MALICIOUS

PDF

61.7 KB Created: 2020-08-27 19:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4719fe5fec21ca3982e8eb5c7a502714 SHA-1: b26204a1299a3e199770c4f38721f674959d3589 SHA-256: 4faad0c22359ba74f95ca34d54c6961e6d5ef22ac3cf8577edf28c3096669883
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is the primary attack vector. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility and lure victims. The primary malicious URL is ttraff.cc, which redirects to a secondary PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=israel+kamakawiwo%2527ole+somewhere+over+the+rainbow+what+a+wonderful+world+mp3 In PDF document text
    • http://files.sharedliving.org/uploads/1/3/1/4/131409274/8a3dc8d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/suwaril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/wejopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/chevy_tracker_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/85231108570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/blessed_be_your_name_guitar_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/79369767397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/90245771392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/coretemp_plugin_rainmeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1826/3448/files/unit_introduction_metric_conversion_worksheet_answer_key.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5700 6384 bytes
SHA-256: acedc839b4d9e0716bdd525cb02e6b9c5dd6d9e8c8e580849d6460eb072ede0d
font_01_sfnt_off000066b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B6 5772 bytes
SHA-256: 6c32bcb9a4bff02a683d50df38692adc21fcf4d4275d8a75aec2d0200dbafb0c
font_02_sfnt_off00007a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A48 1928 bytes
SHA-256: 4fdbe022b111ee898fe27fd94167615cf41b34200ed6b9ab62f25051806b7a32
font_03_sfnt_off0000837c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837C 7412 bytes
SHA-256: e0b89096584347e52b57f83853f0b6b1c36f7730ae55666c4072943a54e9798a
font_04_sfnt_off000097f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F8 15456 bytes
SHA-256: dd9039ca48287fa542cbce0b0e8c9c201c7c4ab95102c3bfa463cc17dcd89509
font_05_sfnt_off0000c819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC819 18776 bytes
SHA-256: 9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13