Malicious PDF — malware analysis report

Static analysis result for SHA-256 047c9720948648ea…

MALICIOUS

PDF

57.5 KB Created: 2020-09-02 15:42:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8337216b8bf1cba9649e10122e6472bf SHA-1: ca767cefee0867611acacc0b928e5644aae6270a SHA-256: 047c9720948648eaebe93b47393e71e6e256c0d00823a7987500d6ef393c1f07
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to other PDFs hosted on Shopify. This is indicative of an SEO poisoning attack, aiming to drive traffic to the primary malicious URL. The primary URL, https://ttraff.cc/wix?keyword=al+quran+dan+terjemahan+full+pdf, is flagged as a malicious redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wix?keyword=al+quran+dan+terjemahan+full+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/savage_in_limbo_monologue.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/jiparazebup.pdf
    • https://cdn.shopify.com/s/files/1/0428/5015/6700/files/gukev.pdf
    • https://cdn.shopify.com/s/files/1/0429/2447/4531/files/53102670796.pdf
    • https://cdn.shopify.com/s/files/1/0459/7209/5136/files/sogidakaxezodes.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5285/files/bagelekagupofapetone.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/58406289782.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/disejajuvo.pdf
    • https://static.usrfiles.com/ugd/b8c837_29702eee934542ef97ce5f83ed0a6068.pdf
    • https://static.usrfiles.com/ugd/d1d005_a4167ca95d9445949db59305f697d9ee.pdf
    • https://static.usrfiles.com/ugd/30ea26_1094f7d4966a4137a2b48896ea24c371.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_dd1f8a62346542ce89805e657919c8d5.pdf
    • https://static.usrfiles.com/ugd/8b2c09_5ee8a67823134414867ac089ce8adc08.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a393.bin
4751a8422a7f6db1a98a0cab7a7efc3765db1bf8314fad7321bea5a92c5732a9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA393 22308 bytes
font_00_sfnt_off00006903.bin
2beb6556adf530b72283f277db62dec63259e2559882ab74b0283c14fff31d00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 5016 bytes
font_01_sfnt_off000079e3.bin
bc10a1be525af6ff53d4be4b31b83600e06433843590e8bd4303909e87c5f06e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E3 13424 bytes
font_03_sfnt_off0000cafe.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFE 4324 bytes

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