Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e44274adc3c085a…

MALICIOUS

PDF

53.8 KB Created: 2020-08-24 06:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7da103fcf6ae7c61d3944e5870718e0f SHA-1: 6b4904aa9ded7c4cf018e16243ba62992cf75cd6 SHA-256: 7e44274adc3c085a1a4624ecc079d4d73b69f08635e45a6d7a6961a7169e17f4
194 Risk Score

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.com/pify?keyword=game+birdland+paradise+mod In PDF document text
    • http://files.mrbdabms.com/uploads/1/3/1/3/131382841/dufebibunolotutom.pdfIn PDF document text
    • http://sizijof.tmichaelstone.com/uploads/1/3/0/7/130739220/fudapamo.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/1/0428/9835/8432/files/86562581376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9786/3832/files/45285497056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3012/2393/files/62359708707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/maltrato_psicologico_ala_mujer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5167/9893/files/37913517788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4333/files/85485654352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2308/0344/files/canon_rebel_xt_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4888/1567/files/ugly_duckling_picture_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/7663346449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/allotropes_of_sulphur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3432/8735/files/new_lenox_township_assessor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/lusoranukiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/biography_of_bhagat_singh_book.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FE 4984 bytes
SHA-256: f4c9ed8c1d975873e5a208abbf03862b1878064a027d66aaf7425ac4a464c65f
font_01_sfnt_off000071b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 4436 bytes
SHA-256: 6985511e93fc5d5450accdba6a92d13b61f66606cae4aa62801c32fc03db2067
font_02_sfnt_off0000825c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825C 10444 bytes
SHA-256: 347a08a5af2cc2eed6dee74a11301ab2c849f41ae11ec35fc7392ae0b56d94f9
font_03_sfnt_off0000a655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA655 16160 bytes
SHA-256: d2619b9a2a7dec81ecbbf05c496b7f5492bc56d5eefc2cd48183daaf603cb6ac
font_04_sfnt_off0000bb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB5D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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