Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7892bdbd03b5d8…

MALICIOUS

PDF

50.7 KB Created: 2020-08-22 12:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce3ca74b7626ac5559dc0c4b0fa0a851 SHA-1: 0c4564cabe9bc757e2d0d439362169a1701ee9f8 SHA-256: fc7892bdbd03b5d867d1644ff0569defa8fe4053776c17d5220e14975e8fe1f9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a lure related to 'Android studio profiler not working'. This indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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=android+studio+profiler+not+working In PDF document text
    • http://files.lacnyc.org/uploads/1/3/2/7/132740343/bikuxabulosapujixeba.pdfIn PDF document text
    • http://files.mcfcconference.com/uploads/1/3/0/9/130969873/tiribofuxex.pdfIn PDF document text
    • http://zakajut.faneshafabreart.com/uploads/1/3/1/4/131438641/45dfb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/58319355310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2432/6566/files/tonizibepuniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/voltage_divider_rule_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/52069782013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/agenda_2020_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6920/0791/files/resedanagegevuremuxemev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/amiga_1200_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4739/8050/files/dejafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/cats_in_the_cradle_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/1737829297.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1A 5028 bytes
SHA-256: 22b84e94ed89012939668e98146dfc965a5e90f40e7282225425a10faddf1e9d
font_01_sfnt_off00008c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C57 10364 bytes
SHA-256: 4030da8cfd73728d2fa95d9c6fc1e0dd86d0e4bfc5733b5143ce4786fb1482f0
font_02_sfnt_off0000afc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC5 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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