Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5387e865dff97fc…

MALICIOUS

PDF

46.1 KB Created: 2020-08-27 22:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a14dc16b51a4be836f73d7cc14197f3e SHA-1: c1c14bd575a8e68dcebe0573d689467008b31529 SHA-256: f5387e865dff97fca178bb402ad071867be99a413c4d4a929e8cde7ae1ef1d96
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=6+4+elimination+using+multiplication, which is likely used to obscure the final destination of the attack. The document body contains garbled text but also includes the same malicious URL and several other URLs hosted on Shopify and other domains, some of which are confirmed benign but others are unknown.

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.ru/pify?keyword=6+4+elimination+using+multiplication In PDF document text
    • http://jirogisi.paulbrownsalons.com/uploads/1/3/2/7/132712615/taxugebe.pdfIn PDF document text
    • http://pazojixim.sthelensathleticsclub.com/uploads/1/3/0/7/130738667/6295117.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/1/0432/2839/7732/files/fofazuzinerunarodima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7461/6472/files/best_reader_for_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2634/9985/files/plague_inc_hacked_apk_everything_unlocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/nixerusivominana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/adobe_ocr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7154/files/directv_remote_codes_for_vizio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/11th_maths_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/8321013720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/70638988091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3528/6943/files/pevetubopekijuribowedoxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/38104687960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/57898004317.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000699b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699B 5304 bytes
SHA-256: dbc1250bdd325df518c3de8f004d6d1158a81243b02a79e3b74e89ad5b0c29df
font_01_sfnt_off00007b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B96 14468 bytes
SHA-256: e8437c0f6a8eb2cbf7222d6c92fca179a390ea167edf4fdbcb3267f5185bbe88

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